Process for preparing optically active 2,3-dihydrobenzofuran compounds
申请人:——
公开号:US20040077712A1
公开(公告)日:2004-04-22
A process for preparing optically active 2,3-dihydrobenzofuran compounds which comprises subjecting a 2,3-dihydrobenzofuran compound represented by the general formula or a salt thereof to optical resolution with an optically active acid compound:
1
[wherein R
1
and R
2
are each hydrogen or an optionally substituted hydrocarbon group; R
3
is an optionally substituted aromatic group; and C is a benzene ring which may further have a substituent in addition to the amino group]. The process enables industrially advantageous production of intermediates for the synthesis of optically active 2,3-dihydrobenzofuran compounds useful as preventive and/or therapeutic drugs for neurodegenerative diseases and so on.