Novel keto-diphenol compounds are disclosed. These compounds are intermediates in the production of novel tetraphenolic compounds which have utility as branching agents in the production of novel, randomly branched polycarbonates.
Guest-Induced Supramolecular Isomerism in Inclusion Complexes of T-Shaped Host 4,4-Bis(4′-hydroxyphenyl)cyclohexanone
作者:Srinivasulu Aitipamula、Ashwini Nangia
DOI:10.1002/chem.200500400
日期:2005.11.4
The adaptable cavity of host 1 expands to 11x15-18 A through the inclusion of water with the larger cresol and halophenol guests (o-cresol, m-cresol, o-chlorophenol, and m-bromophenol) compared with a size of 10x13 A for phenol and aniline inclusion. The ladder host framework of 1 is chiral (P2(1)) with phenol, whereas the inclusion of isosteric o- and m-fluorophenol results in a novel polar brick-wall