METHOD FOR PRODUCING OPTICALLY ACTIVE 1-AMINO-2-VINYLCYCLOPROPANECARBOXYLIC ACID ESTER
申请人:Aikawa Toshiaki
公开号:US20120130116A1
公开(公告)日:2012-05-24
1-Amino-2-vinylcyclopropanecarboxylic acid ester, which is useful as a synthetic intermediate of pharmaceuticals, can be produced by a process of producing 1-amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (4):
including a step of hydrolysis of an optically active 1-N-(arylmethylene)amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (3):
which is obtained by reacting an N-(arylmethylene)glycine ester represented by formula (1):
with a compound represented by formula (2):
in the presence of a base and an optically active quaternary ammonium salt.
1-氨基-2-乙烯基环丙烷羧酸酯是一种用作制药合成中间体的化合物,可以通过以下步骤制备:首先,将化合物(2)与代表式(1)的N-(芳基亚甲基)甘氨酸酯在碱和手性季铵盐的存在下反应,得到代表式(3)的手性1-N-(芳基亚甲基)氨基-2-乙烯基环丙烷羧酸酯;然后,对该化合物进行水解反应,得到代表式(4)的1-氨基-2-乙烯基环丙烷羧酸酯,该化合物可用作制药合成中间体。