REGIOSELECTIVE SYNTHESIS OF TRIFLUOROMETHYLATED PYRAZOLES BY SELECTIVE PROTECTION OF TRIFLUOROMETHYL-BETA-DIKETONES

被引:41
作者
LYGA, JW
PATERA, RM
机构
[1] Agricultural Chemical Group, FMC Corporation, Princeton, New Jersey, 08543
关键词
D O I
10.1002/jhet.5570270418
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
1,1,1‐Trifluoropentane‐2,4‐dione was selectively protected by treatment with pyrrolidine to give 6. The reaction of 6 with arylhydrazines gave 5 exclusively. The structural assignment for 5 was confirmed by quenching the dianion of 8 with ethyl trifluoroacetate. Copyright © 1990 Journal of Heterocyclic Chemistry
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页码:919 / 921
页数:3
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