Solid-state dehydration of (o-hydroxyaryl)diphenylmethanols. Crystal and molecular structures of [1-(2-hydroxyphenyl)]diphenylmethanol and of [1-(2-hydroxynaphthyl)]diphenylmethanol

o-Quinone methide with overcrowded olefin component as a dehydridation catalyst under aerobic photoirradiation conditions

“…At the outset, we selected a representative isolable o -QM 1 8 ( Fig. 2a ), and evaluated its intrinsic reactivity toward an organic reductant, 2-phenylbenzothiazoline, 9 in CDCl 3 by 1 H NMR (400 MHz) monitoring experiment, which showed that conversion of 1 to the reduced form 1 -H 2 via 1,4-reduction did not occur ( Fig.…”