The reaction of aryl‐substituted allenes with alcohols under gold catalysis led to highlysubstituted indenes in good yields, with low catalyst loading and under mild conditions. During this domino transformation, two C−C bonds are formed with water as the only byproduct.
Carbon–Carbon Bond Formation via the Electrophilic Addition of Carbocations to Allenes
作者:Bo Meng、Shengming Ma
DOI:10.1021/ol3006985
日期:2012.6.1
A novel electrophilic addition of aryl-substituted allenes and carbocationsforming a carbon–carbonbond is described. Stereodefined allylic halides and indenes were furnished with excellent regio- and stereoselectivity depending on the structure of allenes.
Construction of vicinal 4°/3°-carbons<i>via</i>reductive Cope rearrangement
作者:Kristin M. Sobie、Matthew Albritton、Yinuo Yang、Mariana M. Alves、Adrian Roitberg、Alexander J. Grenning
DOI:10.1039/d1sc06307c
日期:——
Herein reported is a strategy for constructing vicinal 4°/3° carbons via reductive Cope rearrangement. Substrates have been designed which exhibit Cope rearrangement kinetic barriers of ∼23 kcal mol−1 with isoenergetic favorability (ΔG ∼ 0). These fluxional/shape-shifting molecules can be driven forward by chemoselective reduction to useful polyfunctionalized building blocks.