Stereoselective synthesis of dibenzoxapine containing tetrasubstituted exocyclic alkenes via cascade methylboronic acid coupling reactions
作者:Hannah Yu、Rachel N. Richey、Javier Mendiola、Marta Adeva、Carmen Somoza、Scott A. May、Matthew W. Carson、Michael J. Coghlan
DOI:10.1016/j.tetlet.2008.01.099
日期:2008.3
A stereoselective method for the preparation of dibenzoxapine containing tetrasubstituted exocyclic E-alkenes has been developed. The key reaction involves an intramolecular cyclocarbopalladation of alkynes to form a vinylpalladium species and subsequently coupling the vinylpalladium with methylboronic acid. The approach provides a straightforward method for the synthesis of tetrasubstituted exocyclic
已经开发了用于制备含有四取代的环外E-烯烃的二苯并di庚因的立体选择方法。关键反应涉及炔烃的分子内环碳缩合反应,形成乙烯基钯物质,然后将乙烯基钯与甲基硼酸偶联。该方法提供了合成四取代的环外E-烯烃的直接方法。