Elaboration of a novel type of planar-chiral methylene bridged biphenols based on [2.2]paracyclophanes
作者:Valeria I Rozenberg、Dmitrii Yu Antonov、Roman P Zhuravsky、Evgenii V Vorontsov、Viktor N Khrustalev、Nikolai S Ikonnikov、Yuri N Belokon’
DOI:10.1016/s0957-4166(00)00215-9
日期:2000.7
chiral methylene bridged biphenols with planar chirality has been designed and elaborated. The synthetic approach is based on the use of 4-hydroxy-5-hydroxymethyl[2.2]paracyclophane 9 derived from either racemic or enantiomerically pure (S)-4-formyl-5-hydroxy[2.2.]paracyclophane (FHPC) by reduction with LiAlH4. The condensation of 9 with chiral racemic 4-hydroxy[2.2]paracyclophane 4 and achiral phenols