An expedient approach to allenes and polycyclic structures using propargyl radicals
摘要:
A general approach to the synthesis of allenes and polycyclic structures has been developed, based on the addition of a xanthate to an enyne followed by ring-closure of the allenyl radical on to an internal olefin. (c) 2005 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed Carbonylative Heck-Type Reactions of Alkyl Iodides
作者:Kayla S. Bloome、Erik J. Alexanian
DOI:10.1021/ja1053913
日期:2010.9.22
A palladium-catalyzed carbonylative Heck-type cyclization of alkyl halides is described. Treatment of a range of primary and secondary alkyliodides with catalytic palladium(0) under CO pressure forms a variety of synthetically versatile enone products. The reactivity described represents a rare example of a palladium-catalyzedHeck-type cyclization involving unactivatedalkyl halides with β-hydrogens
描述了烷基卤化物的钯催化羰基化 Heck 型环化。在 CO 压力下用催化钯 (0) 处理一系列伯和仲烷基碘,形成各种合成通用的烯酮产品。所描述的反应性代表了钯催化的 Heck 型环化的一个罕见例子,涉及未活化的烷基卤与 β-氢。烯烃取代具有良好的耐受性,并且可以轻松获得单环和双环碳环。
A new approach to the synthesis of polycyclic structures
作者:Michael E Briggs、Myriem El Qacemi、Chakib Kalaı̈、Samir Z Zard
DOI:10.1016/j.tetlet.2004.06.035
日期:2004.7
A general, convergent approach to the synthesis of polycyclic structures has been developed, based on the tandem radical addition/cyclisation of xanthates to dienones followed by an ionic ring closure to give, finally, a number of variously substituted tricyclic compounds.