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公开(公告)号:US5147929A
公开(公告)日:1992-09-15
申请号:US574456
申请日:1990-08-29
IPC分类号: C07B41/12 , C07C67/08 , C07C227/18 , C07C227/32 , C07C269/06 , C08B3/14 , C08F8/14
CPC分类号: C07C67/08 , C07C227/18 , C07C269/06 , C08B3/14 , C08F8/14
摘要: The invention relates to a process for mild esterification of a sensitive carboxylic acid, in particular a suitably protected amino acid, with an alcohol component, the esterification according to the invention being carried out in the presence of 2,4,6-mesitylene-1-sulfonyl-3-nitro-1,2,4-triazolide (MSNT) and a weak base in an aprotic and non-basic solvent.
摘要翻译: 本发明涉及一种敏感羧酸(特别是适当保护的氨基酸)与醇组分进行温和酯化的方法,根据本发明的酯化是在2,4,6-三甲苯-1 - 磺酰基-3-硝基-1,2,4-三唑烷(MSNT)和弱碱在非质子和非碱性溶剂中。