公开号/公开日
CH620889 A5 1980-12-31 [CH-620889] / 1980-12-31
申请号/申请日
1977CH-0005060 / 1977-04-22
发明人
WARNANT JULIEN;PROST-MARECHAL JACQUES;COSQUER PHILIPPE;
申请人
ROUSSEL UCLAF;
主分类号
IPC分类号
A01N-037/34A01N-053/00A01N-053/08A01N-053/14A01P-007/04A61K-031/545C07B-031/00C07B-055/00C07B-057/00C07C-067/00C07C-069/74C07C-069/743C07C-253/00C07C-253/30C07C-255/32C07C-255/38C07C-255/39C07C-255/53C07D-501/06
摘要
(CH-620889) A process for the preparation of an ester of chiral (A) acid with an optically active (S) alpha -cyano-3-phenoxybenzyl alcohol by reacting an ester of chiral (A) acid with alpha -cyano-3-phenoxybenzyl alcohol of the formula <IMAGE> B in its optically active (R) form or a racemic (R,S) mixture or a mixture of esters of said (R) alcohol and (S) alcohol in non-equimolecular proportions designated herein as "ester (R+S)" with a base selected from the group consisting of ammonium hydroxide, primary, secondary and tertiary amines, quaternary ammonium compounds, liquid amines of high molecular weight, ion exchange resins of a basic character and a catalytic amount of a strong base in at least one solvent in which the ester of the (R) alcohol is soluble and in which the ester of the (S) alcohol is insoluble and recovering from the resulting medium the chiral (A) acid ester of the (S) alcohol which is insoluble.  (From US4133826 A)
地址
代理人
代理机构
;
优先权号
1976FR-0012094 1976-04-23
主权利要求

        
法律状态
(CH-620889) LEGAL DETAILS FOR CH620889  Actual or expected expiration date=1995-04-22    Legal state=DEAD    Status=EXPIRED     Event publication date=1977-04-22  Event code=CH/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=CH CH506077  Application date=1977-04-22  Standardized application number=1977CH-0005060     Event publication date=1980-12-31  Event code=CH/A5  Event indicator=Pos  Event type=Event indicating In Force  Patent granted without preliminary examination  Publication country=CH  Publication number=CH620889  Publication stage Code=A5  Publication date=1980-12-31  Standardized publication number=CH-620889     Event publication date=1997-05-15  Event code=CH/PL  Event indicator=Neg  Event type=Event indicating Not In Force  Patent ceased Loeschung/radiation/radiazion
专利类型码
A5
国别省市代码
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