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
来源：
JOURNAL OF HETEROCYCLIC CHEMISTRY | 1990年 / 27卷 / 04期
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
相关论文
共 33 条
[1]  
[Anonymous], 1966, ADV HETEROCYCL CHEM
[2]  
BASSETTI M, 1988, TETRAHEDRON, V44, P2997
[3]  
Chambers RD., 1981, ADV HETEROCYCLIC CHE, V28, P1, DOI 10.1016/S0065-2725(08)60040-9
[4]  
ENDO Y, 1988, Patent No. 284030
[5]  
FUSCO R, 1967, CHEM HETEROCYCLIC CO, V22, P3
[6]  
GEHRING R, 1988, Patent No. 3707686
[7]  
GEHRING R, 1989, Patent No. 302328
[8]  
GEHRING R, 1988, Patent No. 3712425
[9]  
GEHRING R, 1988, Patent No. 3603291
[10]  
HATTON LR, 1988, Patent No. 295118
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