tert-butyl N-[(2-iodophenyl)methyl]-N-methylcarbamate

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (3.0 g, 8.64 mmol), tris(dibenzylideneacetone)dipalladium (0) (79 mg, 0.086 mmol), bis(2-diphenylphosphinophenyl)ether (93 mg, 0.17 mmol), sodium tert-butoxide (1.10 g, 11.2 mmol), triisopropylsilanethiol (1.73 g, 9.07 mmol) and dry toluene (15 mL) are all placed in an Emrys Optimizer EXP 20 mL microwave reactor tube. The reaction vessel is sealed and subjected to microwave heating at 160° C. for 15 minutes. Upon cooling the mixture is poured onto a plug of silica and the product is eluted with ethyl acetate-heptane (1:4). This procedure is repeated an additional 3 times to furnish a total of 13.7 g (97%) of the title compound as an oil which is used in the next step without further purification. The reaction vessel is sealed Upon cooling the mixture is poured onto a plug of silica the product is eluted with ethyl acetate-heptane (1:4)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (3.0 g, 8.64 mmol), tris(dibenzylideneacetone)dipalladium (0) (79 mg, 0.086 mmol), bis(2-diphenylphosphinophenyl)ether (93 mg, 0.17 mmol), sodium tert-butoxide (1.10 g, 11.2 mmol), triisopropylsilanethiol (1.73 g, 9.07 mmol) and dry toluene (15 mL) are all placed in an Emrys Optimizer EXP 20 mL microwave reactor tube. The reaction vessel is sealed and subjected to microwave heating at 160° C. for 15 minutes. Upon cooling the mixture is poured onto a plug of silica and the product is eluted with ethyl acetate-heptane (1:4). This procedure is repeated an additional 3 times to furnish a total of 13.7 g (97%) of the title compound as an oil which is used in the next step without further purification. The reaction vessel is sealed Upon cooling the mixture is poured onto a plug of silica the product is eluted with ethyl acetate-heptane (1:4)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Iodo-benzyl)-methyl-carbamic acid tert-butyl ester (5.0 g, 14.4 mmol) in dry toluene (30 mL) was placed in two Emrys Optimizer EXP 20 mL tubes. To each tube tris(dibenzylideneacetone)dipalladium (66 mg, 0.072 mmol), bis(2-diphenylphosphinophenyl)ether (78 mg, 0.14 mmol), triisopropylsilanethiol (1.44 g, 7.56 mmol) and sodium tert-butoxide (900 mg, 9.36 mmol) were added sequentially. The tubes were sealed and subjected to microwave heating at 160° C. for 15 minutes. After cooling the mixture, the product was eluted through a plug of silica with ethyl acetate-heptane (1:10) to give 5.2 g (88%) of methyl-(2-triisopropylsilanylsulfanyl-benzyl)-carbamic acid tert-butyl ester. This product was dissolved in THF (70 mL) and cooled to 0° C. Tetrabutylammonium fluoride trihydrate (4.21 g, 13.3 mmol) dissolved in THF (40 mL) was added dropwise at 0° C. and the mixture was stirred at this temperature for 15 minutes. The crude mixture was poured onto a plug of silica gel and the product was eluted with ethyl acetate-heptane (1:2) to give 3.2 g (100%) of (2-mercapto-benzyl)-methyl-carbamic acid tert-butyl ester contaminated with traces of triisopropylsilane fluoride. The tubes were sealed After cooling the mixture the product was eluted through a plug of silica with ethyl acetate-heptane (1:10)