(3,5-diiodophenyl)hydrazine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2. 2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2.2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2-2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2. 2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2. 2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2 g of 3,5-diiodophenylhydrazine (5.5 mmol), and 1 mL (9.3 mmol) of 3-methyl-2-butanone were refluxed in 15 mL of acetic acid for 20 hours. The acetic acid was evaporated and the residue was dissolved in ether. Insoluble precipitate was filtered off, and the etheric solution was washed with aqueous solutions of NaHCO3, followed by Na2S2O3 and water. The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator to give 1.4 g of 4,6-diiodo-2,3,3-trimethyl-3H-indole. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.92 (1H, d, 1.1 Hz, arom.), 7.79 (1H, d, 1.1 Hz, arom.), 2.22 (3H, s, 2-CH3), 1.32 (6H, s, C(CH3)2). The acetic acid was evaporated the residue was dissolved in ether Insoluble precipitate was filtered off the etheric solution was washed with aqueous solutions of NaHCO3 The organic layer was dried with CaCl2 and ether was removed under reduced pressure by a rotary evaporator

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3,5-Diiodoaniline was obtained by the procedure of M. Bérubé (M. Bérubé, et al. Synthesis of Simplified Hybrid Inhibitors of Type 1 17β-Hydroxysteroid Dehydrogenase via the Cross-Metathesis and the Sonogashira Coupling Reactions, Organic Lett. 6 (2004) 3127-3130). 5 g (14.5 mmol) of 3,5-diiodoaniline were stirred with the solution of 5 mL of concentrated hydrochloric acid and 5 mL of water. The mixture was cooled to about −10° C. and 5.5 mL of 20% aqueous solution of NaNO2 was added dropwise with continuous stirring. The suspension was allowed to stir for another 40 minutes. Next, the cooled solution of 10.8 g (47.9 mmol) of SnCl2.2H2O in 11 mL of concentrated HCl was added dropwise at −10° C. to the suspension of diazocompound. The reaction mixture was kept −10° C. for one hour and at 5° C. overnight. The obtained precipitate of a double salt with tin chloride was filtered off and washed with water. The residue was resuspended in water and added concentrated aqueous solution of NaOH to alkaline medium. The 3,5-diiodophenylhydrazine was extracted with ether, the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water, and dried with CaCl2. Ether was evaporated to give 4.2 g of 3,5-diiodophenylhydrazine. 1H-NMR (200 MHz, DMSO-d6), δ, ppm: 7.10 (2H, d, 1.2 Hz, arom.), 6.92 (1H, d, 1.2 Hz, arom.), 5.51 (1H, s, NH), 4.12 (2H, broad s, NH2). The reaction mixture was kept −10° C. for one hour and at 5° C. overnight The obtained precipitate of a double salt with tin chloride was filtered off washed with water added concentrated aqueous solution of NaOH The 3,5-diiodophenylhydrazine was extracted with ether the organic layer was washed in turn with aqueous NaOH, Na2S2O3 and water dried with CaCl2 Ether was evaporated