Palladium-catalysed polycyclization of dienynes to give carbocyclic angularly bisanellated cyclohexadlene derivatives
作者:Frank E. Meyer、J�rg Brandenburg、Philip J. Parsons、Armin de Meijere
DOI:10.1039/c39920000390
日期:——
Various 2-bromododeca-1,11-dien-6-ynes 1a,b,8 and trans- or cis-10a,b when subjected to Heck reaction conditions, cleanly undergo palladium-catalysed biscyclizations followed by an electrocyclic rearrangement to form tricyclic cyclohexadienes 5a,b, 9 and cis- or trans-11a,b as sole products (7 examples).
在Heck反应条件下,各种2-溴十二烯-1,11-二炔1a,b,8以及反式或顺式-10a,b,干净地经历了钯催化的双环化反应,随后通过电环重排形成三环环己二烯5a,b, 9和顺式或反式-11a,b作为唯一产物(7个例子)。