Palladium catalysed tandem cyclisation-anion capture processes. Part 1. Background and hydride ion capture by alkyl- and π-allyl-palladium species.
作者:Barry Burns、Ronald Grigg、Vijayaratnam Santhakumar、Visuvanathar Sridharan、Paul Stevenson、Tanachet Worakun
DOI:10.1016/s0040-4020(01)88268-5
日期:1992.1
A new, wide ranging, synthetically powerful, catalytic tandem cyclisation-anion capture process is proposed which depends on the rate of cyclisation of an organopalladium specifies (RPdX) onto a proximate alkene or diene being significantly faster than anion exchange and reductive elimination in the sequence RPdX → RPdY → RY + Pd(0). The catalytic cyclisation - anion capture sequence is illustrated
提出了一种新的,范围广泛,合成功能强大的催化串联环化-阴离子捕获方法,该方法取决于有机钯化合物(RPdX)在近邻烯烃或二烯上环化的速率明显快于顺序中的阴离子交换和还原消除RPdX→RPdY→RY + Pd(0)。举例说明了催化环化-阴离子捕获序列可通过多种底物捕获氢化物,从而产生稠合和螺环,碳和杂环系统,以及区域和立体特异性。