Reacción #710533

Ecuación de reacción

Methanesulfonic acid

(1R,2S)-1-(tert-butoxycarbonylamino)-2-vinyl-cyclopropanecarboxylic acid

triethylamine

→

titled compound

(1R,2S)-1-amino-2-vinyl-cyclopropanecarboxylic acid

Disolventes

methylene chloride

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroa solid was precipitated
2. 2
   OtroThe solid was sufficiently precipitated
3. 3
   workup.STIRRINGthe solution was stirred at 25° C. for 30 minutes
4. 4
   OtroThereafter, the solid was separated by filtration under reduced pressure
5. 5
   LavadoThe solid was washed with methylene chloride (5 mL)
6. 6
   Otrodrying

Procedimiento

Methanesulfonic acid (576 mg, 6 mmol) was added to a solution of (1R,2S)-1-(tert-butoxycarbonylamino)-2-vinyl-cyclopropanecarboxylic acid (1135 mg, 5 mmol) and methylene chloride (5 mL), and the mixture was stirred at 25° C. for 3 hours. When triethylamine (708 mg, 7 mmol) was added thereto, a solid was precipitated. The solid was sufficiently precipitated, and then the solution was stirred at 25° C. for 30 minutes. Thereafter, the solid was separated by filtration under reduced pressure. The solid was washed with methylene chloride (5 mL), and then was subjected to vacuum drying. Thereby, the titled compound was produced as a white solid (665 mg, yield of 100%).

Fuente