Selective synthesis of some 5-hydrazono-5,6,7,8-tetrahydro-2H-1-benzopyran-2-ones

被引:8
|
作者
Trebse, P
Recelj, B
Kocevar, M
Polanc, S
机构
[1] Fac. of Chem./Chem. Technology, University of Ljubljana, 1000 Ljubljana
关键词
D O I
10.1002/jhet.5570340425
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A simple, highly selective transformation of 5,6,7,8-tetrahydro-2H-1-benzopyran-2,5-diones 1-3 and 14 with some phenylhydrazines and heterocyclic hydrazines to 5-hydrazono-2H-1-benzopyran-2-ones 4-12 and 15-16 is described. Under more severe conditions the hydrazonoquinoline derivative 17 was obtained from the benzopyran derivative 3 and phenylhydrazine.
引用
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页码:1247 / 1250
页数:4
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