ASYMMETRIC-SYNTHESIS OF (S)-(-)-METHYL TROPINATE - APPLICATION OF THE IRON ACYL COMPLEX (S)-(+)-[(ETA-5-C5H5)FE(CO)(PPH3)COCH2PH] AS A HOMOCHIRAL PHENYLACETATE ENOLATE EQUIVALENT

被引:13
作者
BAKER, TM [1 ]
BODWELL, GJ [1 ]
DAVIES, SG [1 ]
EDWARDS, AJ [1 ]
METZLER, MR [1 ]
机构
[1] DYSON PERRINS LAB,S PARKS RD,OXFORD OX1 3QY,ENGLAND
关键词
D O I
10.1016/S0040-4020(01)87273-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Treatment of the lithium enolate derived from homochiral (S)-[(eta5-C5H5)Fe(CO)(PPh3)COCH3 5 with benzyne afforded the homochiral phenylacetyl complex (S)-[(eta5-C5H5)Fe(CO)(PPh3)COCH2Ph] 4. Treatment of the lithium enolate derived from 4 with ClCH2OCH2Ph furnished the homochiral alpha-substituted complex (S,S)-(-)-[(eta5-C5H5)-Fe(CO)(PPh3)COCH(CH2OCH2Ph)Ph] 4 (d.e. > 98%), which on decomplexation and debenzylation afforded (S)-(-)-methyl tropinate (S)-2 (e.e. > 98%).
引用
收藏
页码:5635 / 5647
页数:13
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