[4+2]-CYCLOADDITION AND [2+4]-CYCLOADDITION PROCESSES OF 4,5-DICYANOPYRIDAZINE WITH 2,3-DIMETHYLBUTA-1,3-DIENE

被引：13

作者：

NESI, R ^{[1
]}

GIOMI, D ^{[1
]}

TURCHI, S ^{[1
]}

PAOLI, P ^{[1
]}

机构：

[1] UNIV FLORENCE,DIPARTIMENTO ENERGET,I-50139 FLORENCE,ITALY

来源：

TETRAHEDRON | 1994年 / 50卷 / 30期

关键词：

D O I：

10.1016/S0040-4020(01)85385-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The title compounds afforded under relatively mild conditions the polycyclic systems 3a, 4, and 5 through alternative concomitant cycloadditions; the reactivity of the dicyanopyridazine system was critically influenced by the presence of methyl groups at the 3 and 6 positions. The skeleton of 3a and the stereochemistry of 5 were established by X-ray experiments.

引用

页码：9189 / 9194

页数：6

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