SUBSTITUTED BICYCLIC AND TRICYCLIC OXAZOLO[4,5-D]-1,2,3-TRIAZOLE SYSTEMS - RING EXPANSIONS TO 1,3,4,5-OXATRIAZINES AND RING CONTRACTIONS TO 1,2,3-TRIAZASPIROALKANE DERIVATIVES

被引：3

作者：

BUTLER, RN

OSHEA, DF

机构：

[1] Chemistry Department, University College, Galway

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 | 1994年 / 19期

关键词：

D O I：

10.1039/p19940002797

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Synthesis of a range of new bicyclic and tricyclic fused oxazolo[4,5-d]-1,2,3-triazole systems is described. Treatment of these with acid caused transformations to substituted 1,3,4,5-oxatriazine and new 1,2,3-triazaspiroalkane systems which were isolated in high yields. Kinetic studies of the ring transformations indicated the presence of a delocalised carbocation intermediate and the mechanism of the ring expansion and contraction is discussed.

引用

页码：2797 / 2800

页数：4

共 11 条

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