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ChemicalBook CAS DataBase List Cyclopropanecarboxylic acid, 1-[(trifluoroacetyl)amino]- (9CI)
669066-98-2

Cyclopropanecarboxylic acid, 1-[(trifluoroacetyl)amino]- (9CI) synthesis

4synthesis methods
-

Yield:669066-98-2 87%

Reaction Conditions:

with triethylamine in methanol at 20; for 24 h;Inert atmosphere;

Steps:

A-1.A

ΓΑ1 l-(2,2,2-Trifluoro-acetylamino)-cyclopropanecarboxylic acid1-Amino-cyclopropanecarboxylic acid (2.483 g, 23.8 mmol) was added to MeOH (60 ml) to give a white suspension. Et3N (2.65 g, 3.65 ml, 26.2 mmol) and trifluoro-acetic acid ethyl ester (3.72 g, 3.12 ml, 26.2 mmol) were added and the mixture was stirred at RT. After 24 h, it was poured onto ice, acidified with IN HCl and extracted four times with EtOAc. The organic layer was washed once with water and once with IN HCl, dried over MgS04, filtered and evaporated; the residue formed was dried in vacuo to give the title compound (4.07 g, 87%) as colorless solid. MS: 196.0 (M-H~).

References:

WO2012/101011,2012,A2 Location in patent:Page/Page column 44