Organocatalytic regiospecific synthesis of 1H-indene-2-carbaldehyde derivatives: suppression of cycloolefin isomerisation by employing sterically demanding catalysts
作者:Hui Mao、Dong Wan Kim、Hun Yi Shin、Choong Eui Song、Jung Woon Yang
DOI:10.1039/c6ob01918h
日期:——
The regiospecific synthesis of 1H-indene-2-carbaldehyde derivatives was achieved through transition-metal-free, reductive cyclisation of ortho-formyl trans-cinnamaldehydes with Hantzsch ester in the presence of an aminocatalyst. In particular, cycloolefin isomerisation of the resulting products could be inhibited efficiently by the introduction of a stericallydemanding stereo-defined aminocatalyst