Cycloaddition reactions of 1,2-diazepines with nitrile oxides. synthesis of 1,2,9-triaza-8-oxabicyclo-[5.3.0]-3,5,9-decatriene derivatives
作者:Jacques Streith、Gérard Wolff、Hans Fritz
DOI:10.1016/0040-4020(77)84084-2
日期:1977.1
A new heterocyclic system, 1,2,9-triaza-8-oxabicyclo-[5.3.0]-3,5,9-decatriene 4, has been synthesized by regiospecific 1,3-dipolar cycloaddition of nitrile oxides to the imine double bond of 1,2-diazepines. Bis-adduct 5a is obtained in only trace amounts showing that the imine double bond is more reactive than the Δ4-olefinic bond.
一种新的杂环体系,1,2,9-三氮杂八-氧杂双环-[5.3.0] -3,5,9-癸三烯4,是通过将亚硝酸盐与亚胺双键的区域特异性1,3-偶极环加成而合成的1,2-二氮杂的键合。双加合物5A仅在跟踪获得的数额显示该亚胺双键比Δ更具反应性的4 -olefinic键。