作者:Piero Dalla Croce、Raffaella Ferraccioli、Concetta La Rosa
DOI:10.1016/0040-4020(95)00545-j
日期:1995.8
The behaviour of mesoionic 5H,7H-thiazolo [3,4-c] oxazol-1-ones (α) towards imines (2) and (3) was studied. The cycloaddition reaction affords 7-thia-2,5-diazaspiro [3,4] octan-1-one (4–7) and lH,3H-imidazo [1,5-c] thiazole (8) derivatives. The possible mechanism involved in the formation of products as well as the unusual rearrangement showed by spirocyclic β-lactams (6,7) are discussed.
研究了中离子5H,7H-噻唑并[3,4-c]恶唑-1-酮(α)对亚胺(2)和(3)的行为。环加成反应得到7-thia-2,5-diazaspiro [3,4] octan-1-one(4-7)和1H,3H-咪唑并[1,5-c]噻唑(8)衍生物。讨论了产物形成的可能机制以及螺环β-内酰胺类化合物(6,7)所显示的异常重排。