diazo(dimethoxyphosphoryl)methane

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

Procedure: A solution of dimethyl (diazomethyl)phosphonate (0.516 g, 3.44 mmole, prepared as in Seyferth, D.; Marmor, R. S.; Hilbert, P. J. Org. Chem 1971, 36(10), 1379-1386) dissolved in dry tetrahydrofuran (10 mL) was added via cannulation to a solution of potassium t-butoxide (0.386 g, 3.4 mmol) dissolved in dry tetrahydrofuran (10 mL) at -78° C. under an argon atmosphere. To this was added rapidly a solution of 4-(3-cyclopentyloxy-4-methoxyphenyl)-1,1-(ethylenedioxy)-4-formylcyclohexane (0.62 g, 1.72 mmol) in dry tetrahydrofuran (10 mL). After 2 h, the reaction was warmed to room temperature, water was added and the mixture was extracted three times with ethyl acetate. The combined organic extract was washed with brine, was dried (sodium sulfate) and was evaporated. Purification by flash chromatography, eluting with 3:1 hexanes/ethyl acetate provided a white solid. mp 53.5°-55° C. the mixture was extracted three times with ethyl acetate The combined organic extract was washed with brine was dried (sodium sulfate) was evaporated Purification by flash chromatography eluting with 3:1 hexanes/ethyl acetate provided a white solid

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

Procedure: (E,E)-Farnesol, (5.0 mmol, 1.11 g, 1.26 ml) was stirred under argon in 10 ml of dry deoxygenated benzene (10 ml) and treated in one portion with ##STR87## (1.0 mmol, 0.442 g). The dark blue/green solution was stirred at room temperature and a solution of (1.5 g, 10.0 mmol) of dimethyl diazomethylphosphonate (prepared according to D. Seyferth et al, J. Org. Chem., 1971, vol. 36, No. 10, pages 1379 to 1386) in 20 ml of dry, deoxygenated benzene was added dropwise over 4 hours via syringe pump. After addition, the reaction mixture was stirred an additional 45 minutes. The reaction mixture was stripped of solvent and applied as a 75% ethyl acetate/Hexane solution to a flash chromatography column (50 mm diameter, 6" of silica gel) eluted with 75% ethyl acetate/hexane to afford 0.627 g, (36% yield), of the ether as a dark blue/green oil. of dry deoxygenated benzene (10 ml) treated in one portion with ##STR87## (1.0 mmol, 0.442 g) 10, pages 1379 to 1386) in 20 ml of dry deoxygenated benzene was added dropwise over 4 hours via syringe pump After addition the reaction mixture was stirred an additional 45 minutes eluted with 75% ethyl acetate/hexane

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

Procedure: (E,E)-Farnesol, (5.0 mmol, 1.11 g, 1.26 ml) was stirred under argon in 10 ml of dry deoxygenated benzene (10 ml) and treated in one portion with ##STR88## (1.0 mmol, 0.442 g). The dark blue/green solution was stirred at room temperature and a solution of (1.5 g, 10.0 mmol) of dimethyl diazomethylphosphonate (prepared according to D. Seyferth et al, J. Org. Chem., 1971, vol. 36, No. 10, pages 1379 to 1386) in 20 ml of dry, deoxygenated benzene was added dropwise over 4 hours via syringe pump. After addition, the reaction mixture was stirred an additional 45 minutes. The reaction mixture was stripped of solvent and applied as a 75% ethyl acetate/Hexane solution to a flash chromatography column (50 mm diameter, 6" of silica gel) eluted with 75% ethyl acetate/hexane to afford 0.627 g, yield), of the ether as a dark blue/green oil. of dry deoxygenated benzene (10 ml) treated in one portion with ##STR88## (1.0 mmol, 0.442 g) 10, pages 1379 to 1386) in 20 ml of dry deoxygenated benzene was added dropwise over 4 hours via syringe pump After addition the reaction mixture was stirred an additional 45 minutes eluted with 75% ethyl acetate/hexane to afford 0.627 g

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

Procedure: (E,E)-Farnesol, (5.0 mmol, 1.11 g, 1.26 ml) was stirred under argon in 10 ml of dry deoxygenated benzene (10 ml) and treated in one portion with ##STR88## (1.0 mmol, 0.442 g). The dark blue/green solution was stirred at room temperature and a solution of (1.5 g, 10.0 mmol) of dimethyl diazomethylphosphonate (prepared according to D. Seyferth et al, J. Org. Chem., 1971, vol. 36, No. 10, pages 1379 to 1386) in 20 ml of dry, deoxygenated benzene was added dropwise over 4 hours via syringe pump. After addition, the reaction mixture was stirred an additional 45 minutes. The reaction mixture was stripped of solvent and applied as a 75% ethyl acetate/Hexane solution to a flash chromatography column (50 mm diameter, 6" of silica gel) eluted with 75% ethyl acetate/hexane to afford 0.627 g, yield), of the ether as a dark blue/green oil. of dry deoxygenated benzene (10 ml) treated in one portion with ##STR88## (1.0 mmol, 0.442 g) 10, pages 1379 to 1386) in 20 ml of dry deoxygenated benzene was added dropwise over 4 hours via syringe pump After addition the reaction mixture was stirred an additional 45 minutes eluted with 75% ethyl acetate/hexane to afford 0.627 g

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

Procedure: A solution of 1-BOC-3-formylpiperidine (1.46 g, 6.85 mmol) and (diazomethyl) phosphonic acid dimethyl ester (1.79 g, 11.94 mmol) in 50 mL methanol was stirred at ice-bath for 10 min, K2CO3 (1.96 g, 14.2 mmol) was added to the above mixture and stirred at ice-bath for 2 hrs, then stirred at rt overnight. The mixture was evaporated in vacuo, to the residue was added EtOAc and water, the organic layer was separated and water layer was extracted with EtOAc (100 mL×3). The combined organic layers were washed with water and brine successively, dried with Na2SO4, filtered, and the filtrate was evaporated in vacuo to give 1.44 g product as colorless oil (100.0%). 1H NMR (300 MHz, CDCl3) δ: 3.90 (1 H, brs), 3.70-3.75 (1 H, m), 2.95-3.02 (2 H, m), 2.40-2.47 (1 H, m), 2.05 (1 H, d, J=2.1 Hz), 1.94-1.99 (1 H, m), 1.69-1.73 (1 H, m), 1.50-1.63 (2 H, m), 1.46 (9 H, s). stirred at rt overnight The mixture was evaporated in vacuo, to the residue was added EtOAc and water the organic layer was separated water layer was extracted with EtOAc (100 mL×3) The combined organic layers were washed with water and brine successively dried with Na2SO4 filtered the filtrate was evaporated in vacuo

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

Procedure: A solution of 1-BOC-3-formylpiperidine (1.46 g, 6.85 mmol) and (diazomethyl) phosphonic acid dimethyl ester (1.79 g, 11.94 mmol) in 50 mL methanol was stirred at ice-bath for 10 min, K2CO3 (1.96 g, 14.2 mmol) was added to the above mixture and stirred at ice-bath for 2 hrs, then stirred at rt overnight. The mixture was evaporated in vacuo, to the residue was added EtOAc and water, the organic layer was separated and water layer was extracted with EtOAc (100 mL×3). The combined organic layers were washed with water and brine successively, dried with Na2SO4, filtered, and the filtrate was evaporated in vacuo to give 1.44 g product as colorless oil (100.0%). 1H NMR (300 MHz, CDCl3) δ: 3.90 (1 H, brs), 3.70-3.75 (1 H, m), 2.95-3.02 (2 H, m), 2.40-2.47 (1 H, m), 2.05 (1 H, d, J=2.1 Hz), 1.94-1.99 (1 H, m), 1.69-1.73 (1 H, m), 1.50-1.63 (2 H, m), 1.46 (9 H, s). stirred at rt overnight The mixture was evaporated in vacuo, to the residue was added EtOAc and water the organic layer was separated water layer was extracted with EtOAc (100 mL×3) The combined organic layers were washed with water and brine successively dried with Na2SO4 filtered the filtrate was evaporated in vacuo

Conditions: temp:-35.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of dimethyl diazomethylphosphonate (0.60 g, 4.0 mmol) (prepared as described by Brown, D. et al., J. Org. Chem. 1996, 61(7), 2540-1 which is hereby incorporated by reference in its entirety and for all purposes as if specifically set forth herein) in 20 mL of THF at −78° C. was added potassium tert-butoxide (4.0 mL, 4.0 mmol). The mixture was stirred for 15 minutes and (S)-(−)-2-(tert-butoxycarbonylamino)-3-phenylpropanal (0.50 g, 2.0 mmol) (commercially available from 3B Scientific Corporation Product List (Order Number 3B3-015684)), was added in 2 mL of THF. The mixture was stirred for 10 minutes and then warmed to −35° C. and stirred for 1 hour. The reaction was then quenched with 10 mL of aqueous NH4Cl and stirred for 15 minutes. The biphasic mixture was diluted with 10 mL of water and partitioned in a separatory funnel. The aqueous portion was then extracted three times with 10 mL of EtOAc. The combined organic layers were washed with 25 mL of brine and dried over MgSO4. Filtration and concentration under reduced pressure, followed by flash chromatography on silica gel (2.5% to 20% EtOAc/hexanes) afforded (S)-tert-butyl 1-phenylbut-3-yn-2-ylcarbamate (0.18 g, 37% yield). 1H NMR (400 MHz, CDCl3) δ ppm 7.40-7.23 (m, 5H), 4.81-4.75 (m, 1H), 4.40-4.29 (m, 2H), 3.16 (dd, J=5.3 Hz, 14.2 Hz, 1H), 3.03 (dd, J=9.2 Hz, 5.1 Hz, 1H), 1.42 (s, 9H). at −78° C. The mixture was stirred for 10 minutes stirred for 1 hour The reaction was then quenched with 10 mL of aqueous NH4Cl stirred for 15 minutes The biphasic mixture was diluted with 10 mL of water partitioned in a separatory funnel The aqueous portion was then extracted three times with 10 mL of EtOAc The combined organic layers were washed with 25 mL of brine dried over MgSO4 Filtration and concentration under reduced pressure

Conditions: temp:-35.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of dimethyl diazomethylphosphonate (0.60 g, 4.0 mmol) (prepared as described by Brown, D. et al., J. Org. Chem. 1996, 61(7), 2540-1 which is hereby incorporated by reference in its entirety and for all purposes as if specifically set forth herein) in 20 mL of THF at −78° C. was added potassium tert-butoxide (4.0 mL, 4.0 mmol). The mixture was stirred for 15 minutes and (S)-(−)-2-(tert-butoxycarbonylamino)-3-phenylpropanal (0.50 g, 2.0 mmol) (commercially available from 3B Scientific Corporation Product List (Order Number 3B3-015684)), was added in 2 mL of THF. The mixture was stirred for 10 minutes and then warmed to −35° C. and stirred for 1 hour. The reaction was then quenched with 10 mL of aqueous NH4Cl and stirred for 15 minutes. The biphasic mixture was diluted with 10 mL of water and partitioned in a separatory funnel. The aqueous portion was then extracted three times with 10 mL of EtOAc. The combined organic layers were washed with 25 mL of brine and dried over MgSO4. Filtration and concentration under reduced pressure, followed by flash chromatography on silica gel (2.5% to 20% EtOAc/hexanes) afforded (S)-tert-butyl 1-phenylbut-3-yn-2-ylcarbamate (0.18 g, 37% yield). 1H NMR (400 MHz, CDCl3) δ ppm 7.40-7.23 (m, 5H), 4.81-4.75 (m, 1H), 4.40-4.29 (m, 2H), 3.16 (dd, J=5.3 Hz, 14.2 Hz, 1H), 3.03 (dd, J=9.2 Hz, 5.1 Hz, 1H), 1.42 (s, 9H). at −78° C. The mixture was stirred for 10 minutes stirred for 1 hour The reaction was then quenched with 10 mL of aqueous NH4Cl stirred for 15 minutes The biphasic mixture was diluted with 10 mL of water partitioned in a separatory funnel The aqueous portion was then extracted three times with 10 mL of EtOAc The combined organic layers were washed with 25 mL of brine dried over MgSO4 Filtration and concentration under reduced pressure

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

Procedure: A solution of 1-BOC-3-formylpiperidine (1.46 g, 6.85 mmol) and (diazomethyl) phosphonic acid dimethyl ester (1.79 g, 11.94 mmol) in 50 mL methanol was stirred at ice-bath for 10 min, K2CO3 (1.96 g, 14.2 mmol) was added to the above mixture and stirred at ice-bath for 2 hrs, then stirred at rt overnight. The mixture was evaporated in vacuo, to the residue was added EtOAc and water, the organic layer was separated and water layer was extracted with EtOAc (100 mL×3). The combined organic layers were washed with water and brine successively, dried with Na2SO4, filtered, and the filtrate was evaporated in vacuo to give 1.44 g product as colorless oil (100.0%). 1H NMR (300 MHz, CDCl3) δ: 3.90 (1H, brs), 3.70-3.75 (1H, m), 2.95-3.02 (2H, m), 2.40-2.47 (1H, m), 2.05 (1H, d, J=2.1 Hz), 1.94-1.99 (1H, m), 1.69-1.73 (1H, m), 1.50-1.63 (2H, m), 1.46 (9H, s). stirred at rt overnight The mixture was evaporated in vacuo, to the residue was added EtOAc and water the organic layer was separated water layer was extracted with EtOAc (100 mL×3) The combined organic layers were washed with water and brine successively dried with Na2SO4 filtered the filtrate was evaporated in vacuo

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

Procedure: A solution of 1-BOC-3-formylpiperidine (1.46 g, 6.85 mmol) and (diazomethyl) phosphonic acid dimethyl ester (1.79 g, 11.94 mmol) in 50 mL methanol was stirred at ice-bath for 10 min, K2CO3 (1.96 g, 14.2 mmol) was added to the above mixture and stirred at ice-bath for 2 hrs, then stirred at rt overnight. The mixture was evaporated in vacuo, to the residue was added EtOAc and water, the organic layer was separated and water layer was extracted with EtOAc (100 mL×3). The combined organic layers were washed with water and brine successively, dried with Na2SO4, filtered, and the filtrate was evaporated in vacuo to give 1.44 g product as colorless oil (100.0%). 1H NMR (300 MHz, CDCl3) δ: 3.90 (1H, brs), 3.70-3.75 (1H, m), 2.95-3.02 (2H, m), 2.40-2.47 (1H, m), 2.05 (1H, d, J=2.1 Hz), 1.94-1.99 (1H, m), 1.69-1.73 (1H, m), 1.50-1.63 (2H, m), 1.46 (9H, s). stirred at rt overnight The mixture was evaporated in vacuo, to the residue was added EtOAc and water the organic layer was separated water layer was extracted with EtOAc (100 mL×3) The combined organic layers were washed with water and brine successively dried with Na2SO4 filtered the filtrate was evaporated in vacuo

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

Procedure: A solution of dimethyl (diazomethyl)phosphonate (0.516 g, 3.44 mmole, prepared as in Seyferth, D.; Marmor, R. S.; Hilbert, P. J. Org. Chem 1971, 36(10), 1379-1386) dissolved in dry tetrahydrofuran (10 mL) was added via cannulation to a solution of potassium t-butoxide (0.386 g, 3.4 mmol) dissolved in dry tetrahydrofuran (10 mL) at -78° C. under an argon atmosphere. To this was added rapidly a solution of 4-(3-cyclopentyloxy-4-methoxyphenyl)-1,1-(ethylenedioxy)-4-formylcyclohexane (0.62 g, 1.72 mmol) in dry tetrahydrofuran (10 mL). After 2 h, the reaction was warmed to room temperature, water was added and the mixture was extracted three times with ethyl acetate. The combined organic extract was washed with brine, was dried (sodium sulfate) and was evaporated. Purification by flash chromatography, eluting with 3:1 hexanes/ethyl acetate provided a white solid. mp 53.5°-55° C. the mixture was extracted three times with ethyl acetate The combined organic extract was washed with brine was dried (sodium sulfate) was evaporated Purification by flash chromatography eluting with 3:1 hexanes/ethyl acetate provided a white solid

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

Procedure: A solution of dimethyl (diazomethyl)phosphonate (0.516 g, 3.44 mmole, prepared as in Seyferth, D.; Marmor, R. S.; Hilbert, P. J. Org. Chem 1971, 36(10), 1379-1386) dissolved in dry tetrahydrofuran (10 mL) was added via cannulation to a solution of potassium t-butoxide (0.386 g, 3.4 mmol) dissolved in dry tetrahydrofuran (10 mL) at -78° C. under an argon atmosphere. To this was added rapidly a solution of 4-(3-cyclopentyloxy-4-methoxyphenyl)-1,1-(ethylenedioxy)-4-formylcyclohexane (0.62 g, 1.72 mmol) in dry tetrahydrofuran (10 mL). After 2 h, the reaction was warmed to room temperature, water was added and the mixture was extracted three times with ethyl acetate. The combined organic extract was washed with brine, was dried (sodium sulfate) and was evaporated. Purification by flash chromatography, eluting with 3:1 hexanes/ethyl acetate provided a white solid. mp 53.5°-55° C. the mixture was extracted three times with ethyl acetate The combined organic extract was washed with brine was dried (sodium sulfate) was evaporated Purification by flash chromatography eluting with 3:1 hexanes/ethyl acetate provided a white solid