Cycloadditions to Pyrrolo[1,2-c]thiazoles and Pyrazolo[1,5-c]thiazoles
作者:Oliver B. Sutcliffe、Richard C. Storr、Thomas L. Gilchrist、Paul Rafferty
DOI:10.1016/s0040-4020(00)00956-x
日期:2000.12
The pyrrolo[1,2-c]thiazole generated by dehydration of dimethyl 5-methyl-1H,3H-pyrrolo[1,2-c]thiazole-6,7-dicarboxylate 2-oxide acts as a thiocarbonyl ylide in its cycloaddition to electron deficient alkenes but as an azomethine ylide with electron deficient alkynes. The analogous pyrazolo[1,5-c]thiazole, generated similarly, acts as a thiocarbonyl ylide with both types of dipolarophile. This behaviour
吡咯并[1,2- c ^由二甲基-5-甲基- 1脱水生成]噻唑ħ,3 ħ吡咯并[1,2- c ^ ]噻唑-6,7-二羧酸二-2-氧化物充当一个硫代羰基叶立德其环加成至缺电子的烯烃,但与缺电子的炔烃一起作为甲亚胺叶立德。相似生成的类似吡唑并[1,5-c]噻唑在两种类型的双极性亲和剂中均充当硫代羰基内酯。Frontier MO理论部分解释了此行为。
Garcia-Rio, Luis; Iglesias, Emilia; Leis, J. Ramon, Journal of the Chemical Society. Perkin transactions II, 1993, # 1, p. 29 - 37
作者:Garcia-Rio, Luis、Iglesias, Emilia、Leis, J. Ramon、Pena, M. Elena、Rios, Ana
DOI:——
日期:——
Castro, Albino; Iglesias, Emilia; Leis, Ramon J., Journal of the Chemical Society. Perkin transactions II, 1987, p. 651 - 656
作者:Castro, Albino、Iglesias, Emilia、Leis, Ramon J.、Tato, Jose Vazquez、Meijide, Francisco、Pena, M. Elena