5,5′-Di-<i>tert</i>-butyl-2,2′-dihydroxy-3,3′-methanediyldibenzaldehyde and its allyl-protected dialcohol and dialdehyde precursors
作者:Sandrine Goetz、Julia Barreira Fontecha、Vickie McKee
DOI:10.1107/s010827010402089x
日期:2004.11.15
5,5'-Di-tert-butyl-2,2'-dihydroxy-3,3'-methanediyldibenzalde-hyde, C23H28O4, (IV), has been structurally characterized in two polymorphic forms. The tetragonal form, (in I4(1)/a) has been reported previously but is redetermined and reinterpreted here, while the monoclinic form, (in C2/c) is reported for the first time. In both polymorphs, the molecule lies on a crystallographic twofold axis. Two precursors in the synthesis of (IV), namely 2,2-bis(allyloxy)-5,5'-di-tert-butyl-3,3'-methanediyldibenzenemethanoI (C29H40O4) and 2,2-bis(allyloxy)-5,5'-di-tert-butyl-3,3'-methanediyldibenzaldehyde (C29H36O4) have also been characterized.