Open Access5,5′‐Di‐ tert ‐butyl‐2,2′‐dihydroxy‐3,3′‐methanediyldibenzaldehyde and its allyl‐protected dialcohol and dialdehyde precursors
Author(s) -
Goetz Sandrine,
Barreira Fontecha Julia,
McKee Vickie
Publication year - 2004
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s010827010402089x
Subject(s) - monoclinic crystal system , chemistry , methanol , tetragonal crystal system , medicinal chemistry , aldehyde , benzene , stereochemistry , organic chemistry , crystal structure , catalysis
5,5′‐Di‐ tert ‐butyl‐2,2′‐dihydroxy‐3,3′‐methanediyldibenzaldehyde, C 23 H 28 O 4 , (IV), has been structurally characterized in two polymorphic forms. The tetragonal form, (in I 4 1 / a ) has been reported previously but is redetermined and reinterpreted here, while the monoclinic form, (in C 2/ 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′‐methanediyldibenzenemethanol (C 29 H 40 O 4 ) and 2,2′‐bis(allyloxy)‐5,5′‐di‐ tert ‐butyl‐3,3′‐methanediyldibenzaldehyde (C 29 H 36 O 4 ) have also been characterized.