Carbodiimide, bis(trimethylsilyl)- (7CI,8CI)

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

Procedure: 24.50 g of tert-butyl {2-[2-(1,3-dihydroisoindol-2-yl)-2-oxoacetyl]-4-iodophenyl}carbamate are dissolved in 500 ml of acetonitrile under argon. 0.756 g of caesium fluoride is added, and 16.887 ml of bis(trimethylsilyl)-carbodiimide are added dropwise to the solution over 5 min. The mixture is stirred at room temperature for 15 min, and 400 ml of dichloromethane are added. After addition of 400 ml of hydrochloric acid (1N), the product precipitates out as a white solid. Yield: 14 g of (2-amino-6-iodoquinazolin-4-yl)-(1,3-dihydroisoindol-2-yl)methanone; LC-MS retention time: 1.655 min; the product precipitates out as a white solid

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure of Cuccia, S. J.; Fleming, L. B.; France, D. J. Synth. Comm. 2002, 32 (19), 3011-3018: 3-Bromoacetophenone (2.0 g, 10 mmol, 1 eq), was dissolved in 20 mL DCM. A 1.0 N solution of titanium tetrachloride in DCM (20 mL, 20 mmol, 2 eq) was added dropwise over 15 min and the resulting mixture was stirred at 25° C. for 1 h. Bis-trimethylsilylcarbodiimide (5.0 mL, 22 mmol, 2.2 eq) in 5 mL of DCM was added over 15 min and the reaction was stirred for 16 h under argon. The reaction was poured onto 200 mL of an ice/water mixture and extracted with 3×200 mL of DCM. The combined organic phase was dried over MgSO4, filtered, and concentrated to give 2.3 g (100%) of (1-(3-bromophenyl)ethylidene)cyanamide (DB1, R4=Me) as a white solid: 1H NMR (CDCl3) 8.16 (t, J=1.8 Hz, 1H), 7.94 (dd, J=1.7, 1.1 Hz, 1H), 7.76 (dd, J=1.7, 1.1 Hz, 1H), 7.38 (t, J=8.0 Hz, 1H), 2.82 (s, 3H). the reaction was stirred for 16 h under argon extracted with 3×200 mL of DCM The combined organic phase was dried over MgSO4 filtered concentrated

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure of Cuccia, S. J.; Fleming, L. B.; France, D. J. Synth. Comm. 2002, 32 (19), 3011-3018: 3-Bromoacetophenone (2.0 g, 10 mmol, 1 eq), was dissolved in 20 mL DCM. A 1.0 N solution of titanium tetrachloride in DCM (20 mL, 20 mmol, 2 eq) was added dropwise over 15 min and the resulting mixture was stirred at 25° C. for 1 h. Bis-trimethylsilylcarbodiimide (5.0 mL, 22 mmol, 2.2 eq) in 5 mL of DCM was added over 15 min and the reaction was stirred for 16 h under argon. The reaction was poured onto 200 mL of an ice/water mixture and extracted with 3×200 mL of DCM. The combined organic phase was dried over MgSO4, filtered, and concentrated to give 2.3 g (100%) of (1-(3-bromophenyl)ethylidene)cyanamide (DB1, R4=Me) as a white solid: 1H NMR (CDCl3) 8.16 (t, J=1.8 Hz, 1H), 7.94 (dd, J=1.7, 1.1 Hz, 1H), 7.76 (dd, J=1.7, 1.1 Hz, 1H), 7.38 (t, J=8.0 Hz, 1H), 2.82 (s, 3H). the reaction was stirred for 16 h under argon extracted with 3×200 mL of DCM The combined organic phase was dried over MgSO4 filtered concentrated

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure of Cuccia, S. J.; Fleming, L. B.; France, D. J. Synth. Comm. 2002, 32 (19), 3011-3018: 3-Bromoacetophenone (2.0 g, 10 mmol, 1 eq), was dissolved in 20 mL DCM. A 1.0 N solution of titanium tetrachloride in DCM (20 mL, 20 mmol, 2 eq) was added dropwise over 15 min and the resulting mixture was stirred at 25° C. for 1 h. Bis-trimethylsilylcarbodiimide (5.0 mL, 22 mmol, 2.2 eq) in 5 mL of DCM was added over 15 min and the reaction was stirred for 16 h under argon. The reaction was poured onto 200 mL of an ice/water mixture and extracted with 3×200 mL of DCM. The combined organic phase was dried over MgSO4, filtered, and concentrated to give 2.3 g (100%) of (1-(3-bromophenyl)ethylidene)cyanamide (DB1, R4=Me) as a white solid: 1H NMR (CDCl3) 8.16 (t, J=1.8 Hz, 1H), 7.94 (dd, J=1.7, 1.1 Hz, 1H), 7.76 (dd, J=1.7, 1.1 Hz, 1H), 7.38 (t, J=8.0 Hz, 1H), 2.82 (s, 3H). the reaction was stirred for 16 h under argon extracted with 3×200 mL of DCM The combined organic phase was dried over MgSO4 filtered concentrated

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure of Cuccia, S. J.; Fleming, L. B.; France, D. J. Synth. Comm. 2002, 32 (19), 3011-3018: 3-Bromoacetophenone (2.0 g, 10 mmol, 1 eq), was dissolved in 20 mL DCM. A 1.0 N solution of titanium tetrachloride in DCM (20 mL, 20 mmol, 2 eq) was added dropwise over 15 min and the resulting mixture was stirred at 25° C. for 1 h. Bis-trimethylsilylcarbodiimide (5.0 mL, 22 mmol, 2.2 eq) in 5 mL of DCM was added over 15 min and the reaction was stirred for 16 h under argon. The reaction was poured onto 200 mL of an ice/water mixture and extracted with 3×200 mL of DCM. The combined organic phase was dried over MgSO4, filtered, and concentrated to give 2.3 g (100%) of (1-(3-bromophenyl)ethylidene)cyanamide (DB1, R4=Me) as a white solid: 1H NMR (CDCl3) δ 8.16 (t, J=1.8 Hz, 1H), 7.94 (dd, J=1.7, 1.1 Hz, 1H), 7.76 (dd, J=1.7, 1.1 Hz, 1H), 7.38 (t, J=8.0 Hz, 1H), 2.82 (s, 3H). the reaction was stirred for 16 h under argon extracted with 3×200 mL of DCM The combined organic phase was dried over MgSO4 filtered concentrated

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

Procedure: 2-(3-(Trifluoromethyl)phenyl)-6,7-dihydrobenzo[b]thiophen-4(5H)-one (0.252 g, 0.85 mmol) was dissolved in dichloromethane (2 mL). Titanium tetrachloride (1.7 mL, 1.0 M solution in dichloromethane, 1.7 mmol) was added and the reaction mixture was stirred at room temperature for 1 hr. Bis-trimethylsilylcarbodiimide (0.42 mL, 1.87 mmol) was then added and the mixture was stirred at room temperature for 18 hr. The reaction mixture was poured onto ice/water and the product was extracted with dichloromethane. This was back extracted with water and saturated sodium carbonate (aq.) solution. The organic extracts were combined, dried (MgSO4) and concentrated in vacuo to give the title compound as a cream solid (0.27 g, 99%). the mixture was stirred at room temperature for 18 hr The reaction mixture was poured onto ice/water the product was extracted with dichloromethane This was back extracted with water and saturated sodium carbonate (aq.) solution dried (MgSO4) concentrated in vacuo

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

Procedure: 2-(3-(Trifluoromethyl)phenyl)-6,7-dihydrobenzo[b]thiophen-4(5H)-one (0.252 g, 0.85 mmol) was dissolved in dichloromethane (2 mL). Titanium tetrachloride (1.7 mL, 1.0 M solution in dichloromethane, 1.7 mmol) was added and the reaction mixture was stirred at room temperature for 1 hr. Bis-trimethylsilylcarbodiimide (0.42 mL, 1.87 mmol) was then added and the mixture was stirred at room temperature for 18 hr. The reaction mixture was poured onto ice/water and the product was extracted with dichloromethane. This was back extracted with water and saturated sodium carbonate (aq.) solution. The organic extracts were combined, dried (MgSO4) and concentrated in vacuo to give the title compound as a cream solid (0.27 g, 99%). the mixture was stirred at room temperature for 18 hr The reaction mixture was poured onto ice/water the product was extracted with dichloromethane This was back extracted with water and saturated sodium carbonate (aq.) solution dried (MgSO4) concentrated in vacuo

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

Procedure: To a solution of 3-(1′-oxo-1′,3′,5,7-tetrahydrospiro[cyclopenta[d]pyridazine-6,2′-inden]-6′-yl)benzonitrile (0.0386 g, 0.11 mmol) in CH2Cl2 (5 mL) was added 0.5 mL of 1.0 M TiCl4 in CH2Cl2 at room temperature. After 1.5 h, 0.4 mL of bis(trimethylsilyl)carbodiimide was added to the yellow solution. The resulting mixture was then stirred at room temperature for 20 h. The mixture was quenched with ice, diluted with CH2Cl2, and dried over Na2SO4. After the solvent was removed under reduced pressure, the crude product was directly used in the next step without further purification. LC-MS tR=1.43 min in 3 min chromatography, m/z 362 (MH+). The mixture was quenched with ice diluted with CH2Cl2 dried over Na2SO4 After the solvent was removed under reduced pressure the crude product was directly used in the next step without further purification LC-MS tR=1.43 min in 3 min chromatography, m/z 362 (MH+)

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

Procedure: To a solution of 3-(1′-oxo-1′,3′,5,7-tetrahydrospiro[cyclopenta[d]pyridazine-6,2′-inden]-6′-yl)benzonitrile (0.0386 g, 0.11 mmol) in CH2Cl2 (5 mL) was added 0.5 mL of 1.0 M TiCl4 in CH2Cl2 at room temperature. After 1.5 h, 0.4 mL of bis(trimethylsilyl)carbodiimide was added to the yellow solution. The resulting mixture was then stirred at room temperature for 20 h. The mixture was quenched with ice, diluted with CH2Cl2, and dried over Na2SO4. After the solvent was removed under reduced pressure, the crude product was directly used in the next step without further purification. LC-MS tR=1.43 min in 3 min chromatography, m/z 362 (MH+). The mixture was quenched with ice diluted with CH2Cl2 dried over Na2SO4 After the solvent was removed under reduced pressure the crude product was directly used in the next step without further purification LC-MS tR=1.43 min in 3 min chromatography, m/z 362 (MH+)

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

Procedure: To a solution of 5′-(3-chloro-5-fluorophenyl)-5,6,8,9-tetrahydro-3′H-spiro[benzo[7]annulene-7,2′-benzofuran]-3′-one (0.0607 g, 0.155 mmol) in CH2Cl2 (5 mL) was added 0.7 mL of 1.0 M TiCl4 in CH2Cl2 at room temperature. After 1 h, 0.28 mL of bis(trimethylsilyl)carbodiimide was added to the red solution. The resulting mixture was then stirred at room temperature for 18 h. The mixture was quenched with ice, diluted with CH2Cl2, and dried over Na2SO4. After the solvent was removed under reduced pressure, the crude product was directly used in the next step without further purification. The mixture was quenched with ice diluted with CH2Cl2 dried over Na2SO4 After the solvent was removed under reduced pressure the crude product was directly used in the next step without further purification

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 3-(1-oxo-1,1′,3,3′-tetrahydro-2,2′-spirobi[indene]-6-yl)benzonitrile (34 mg, 0.1 mmol) in DCM (5 mL) was added TiCl4 (76 mg, 0.4 mmol) dropwise, the mixture was stirred at 50° C. at Ar2 under microwave for 5 minutes, N,N′-methanediylidenebis(1,1,1-trimethylsilanamine) (74 mg, 0.4 mmol) was added dropwise. The mixture was stirred at 60° C. at Ar2 under microwave for 10 minutes and poured into ice-water (10 mL). The aqueous layer was extracted with CH2Cl2, which was combined with the organic layer. The organic layer was dried and concentrated to give crude ((Z)—N-(5-(3-cyanophenyl)-1′,3′-dihydro-2,2′-spirobi[indene]-3(1H)-ylidene) cyana mide (36 mg, 99%). The mixture was stirred at 60° C. at Ar2 under microwave for 10 minutes The aqueous layer was extracted with CH2Cl2, which The organic layer was dried concentrated

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6′-bromo-5,6,8,9-tetrahydrospiro[benzo[7]annulene-7,2′-inden]-1′(3′H)-one (20 mg, 0.059 mmol) in DCM (2 mL) was added TiCl4 (44.7 mg, 0.235 mmol) dropwise, the mixture was stirred at 50° C. at Ar2 under microwave for 20 minutes, N,N′-methanediylidenebis(1,1,1-trimethylsilanamine) (43.8 mg, 0.235 mmol) was added dropwise. The mixture was stirred at 60° C. at Ar2 under microwave for 10 minutes and repeated the same operation for one time and then poured into ice-water (10 mL). The aqueous layer was extracted with CH2Cl2, which was combined with the organic layer. The organic layer was dried and concentrated to give crude (Z)—N-(5′-bromo-5,6,8,9-tetrahydrospiro[benzo[7]annulene-7,2′-indene]-3′(1′H)-ylidene)cyanamide (20 mg, 4%). The mixture was stirred at 60° C. at Ar2 under microwave for 10 minutes The aqueous layer was extracted with CH2Cl2, which The organic layer was dried concentrated