Convenient Access to Various 1-Cyclopropylcyclopropane Derivatives
作者:Armin de Meijere、Alexander F. Khlebnikov、Hans Wolf Sünnemann、Daniel Frank、Karsten Rauch、Dmitrii S. Yufit
DOI:10.1002/ejoc.201000209
日期:2010.6
―78 °C, and the resulting 1-lithio-1-cyclopropylcyclopropane can be trapped with various electrophiles to give the correspondingly 1-substituted bicyclopropyl derivatives 10 in yields ranging from 38 to over 90 % (13 examples). The (1-cyclopropylcyclopropyl)boronate 10m, which is also obtained from the 1-lithio derivative, has been subjected to Suzuki cross couplings with a number of aryl halides to