tert-butyl N-[2-oxo-2-(2,2,2-trifluoroethylamino)ethyl]carbamate

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

Procedure: Trifluoracetic acid (23.4 ml) is added dropwise to a solution of [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid ter-butyl ester (3.89 g) in dichloromethane (75 ml). After 18 hours at room temperature, the reaction mixture is concentrated in vacuo. The crude oil is purified by crystallization in diethylether to yield (2,2,2-trifluoro-ethylcarbamoyl)methyl-ammonium trifluoroacetate (4.12 g) as a white solid. the reaction mixture is concentrated in vacuo The crude oil is purified by crystallization in diethylether

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluoroethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HOC (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HOC (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluorethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HCl (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HCl (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluorethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HCl (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HCl (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: Trifluoracetic acid (23.4 ml) is added dropwise to a solution of [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid ter-butyl ester (3.89 g) in dichloromethane (75 ml). After 18 hours at room temperature, the reaction mixture is concentrated in vacuo. The crude oil is purified by crystallization in diethylether to yield (2,2,2-trifluoro-ethylcarbamoyl)methyl-ammonium trifluoroacetate (4.12 g) as a white solid. the reaction mixture is concentrated in vacuo The crude oil is purified by crystallization in diethylether

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

Procedure: Trifluoracetic acid (23.4 ml) is added dropwise to a solution of [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid ter-butyl ester (3.89 g) in dichloromethane (75 ml). After 18 hours at room temperature, the reaction mixture is concentrated in vacuo. The crude oil is purified by crystallization in diethylether to yield (2,2,2-trifluoro-ethylcarbamoyl)methyl-ammonium trifluoroacetate (4.12 g) as a white solid. the reaction mixture is concentrated in vacuo The crude oil is purified by crystallization in diethylether

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluoroethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HOC (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HOC (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluorethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HCl (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HCl (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluorethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HCl (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HCl (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: Trifluoracetic acid (23.4 ml) is added dropwise to a solution of [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid ter-butyl ester (3.89 g) in dichloromethane (75 ml). After 18 hours at room temperature, the reaction mixture is concentrated in vacuo. The crude oil is purified by crystallization in diethylether to yield (2,2,2-trifluoro-ethylcarbamoyl)methyl-ammonium trifluoroacetate (4.12 g) as a white solid. the reaction mixture is concentrated in vacuo The crude oil is purified by crystallization in diethylether

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluoroethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HOC (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HOC (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)

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

Procedure: DIPEA (15 ml) is added to a solution of N-(tert-butoxycarbonyl)glycine (5.0 g), PYBOP (benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate, 16.3 g) and 2,2,2-trifluorethylamine (2.47 ml) in dichloromethane (48 ml). After 24 hours at room temperature, the reaction is quenched with water and extracted three times with dichloromethane. The combined organic phases are washed with HCl (2M), Na2CO3 (1M) and a saturated aqueous solution of NaCl, dried over MgSO4 and concentrated in vacuo. The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2) to yield [(2,2,2-trifluoro-ethylcarbamoyl)-methyl]-carbamic acid tert-butyl ester (3.89 g). the reaction is quenched with water extracted three times with dichloromethane The combined organic phases are washed with HCl (2M), Na2CO3 (1M) a saturated aqueous solution of NaCl, dried over MgSO4 concentrated in vacuo The crude product is purified by column chromatography (450 g) eluting with a mixture of ethyl acetate and hexane (2:3 to 3:2)