Redox transformation of adducts from cycloaddition of diazoacetic ester to β-arylacryloyloxiranes

被引：0
|
作者：
Mikhalenok S.G. [1 ]
Kuz'menok N.M. [1 ]
Zvonok A.M. [1 ]
机构：
[1] Belarus State Technical University
来源：
Mikhalenok, S.G. (serge_msg@yahoo.com) | 2005年 / Springer Science and Business Media Deutschland GmbH卷 / 41期
关键词：
β-arylacryloyloxiranes; 1,3-dipolar cycloaddition; 4,5-dihydro-1H-pyrazoles; Diazoacetic ester; Spectral characteristics;
D O I：
10.1007/s10593-005-0264-7
中图分类号：
学科分类号：
摘要：
It was established that, in addition to ethyl 4-aryl-3-(2,3-epoxyalkanoyl)- 4,5-dihydro-1H-pyrazole-5-carboxylates, the reaction of diazoacetic ester with β-arylacryloyloxiranes also gives ethyl 4-aryl-3(5)-(3-hydroxy-2- methylalkanoyl)-1H-pyrazole-5(3)-carboxylates. The latter are formed from the tautomeric ethyl 4-aryl-5-(2,3-epoxyalkanoyl)-4,5-dihydro-1H-pyrazole-3- carboxylates as a result of intramolecular oxidative-reductive disproportionation. © 2005 Springer Science+Business Media, Inc.
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页码：977 / 986
页数：9
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