An exploration of Suzuki aryl cross coupling chemistry involving [2.2]paracyclophane derivatives
作者:Alex J. Roche、Belgin Canturk
DOI:10.1039/b415764h
日期:——
Suzuki aryl cross coupling reactions using derivatives of [2.2]paracyclophane were examined. A variety of aryl boronicacids and pinacolate esters were successfully cross coupled with 4-bromo[2.2]paracyclophane under standard Suzuki conditions. Whilst an excellent tolerance for electron donating and withdrawing groups was observed, cross coupling reactions with highly sterically demanding borates (e
We report herein the palladium-catalysed mono-selective C–H arylation of [2.2]paracyclophane (PCP) with diverse aryl iodides in the absence of any pendant directing groups, providing straightforward and modular access to C4-arylated [2.2]paracyclophanes. Moreover, a new PCP-containing biaryl monophosphine complex could be readily obtained through further derivation of the arylated product.