H. Gibson, D. Nagvekar, Nori Yamaguchi
Jul 11, 1997
Citations
0
Influential Citations
23
Citations
Journal
Journal of Organic Chemistry
Abstract
A series of monofunctional bis(m-phenylene)-32-crown-10 and m-phenylene-p-phenylene-33-crown-10 derivatives has been synthesized. Cyclization of m- and p-bis(ω-chlorotetraethyleneoxy)benzenes (6) with 5-substituted resorcinols 1 using pseudo-high dilution conditions in DMF and either CsF or K2CO3 as base afforded 5-carbomethoxy-1,3-phenylene-m-phenylene-32-crown-10 (7a, 46%), 5-carbomethoxy-1,3-phenylene-p-phenylene-33-crown-10 (7b, 48%), 5-(benzyloxy)-1,3-phenylene-m-phenylene-32-crown-10 (11a, 42%) and 5-(benzyloxy)-1,3-phenylene-p-phenylene-33-crown-10 (11b, 51%). Unsubstituted m-phenylene-p-phenylene-33-crown-10 (15) was also made (29%) in this way. Functional group conversions of the bis-phenylene macrocycles yielded 5-carboxy-1,3-phenylene-m-phenylene-32-crown-10 (8a), 5-(hydroxymethyl)-1,3-phenylene-m-phenylene-32-crown-10 (9a), 5-(bromomethyl)-1,3-phenylene-m-phenylene-32-crown-10 (10a), 5-hydroxy-1,3-phenylene-m-phenylene-32-crown-10 (12a), 5-hydroxy-1,3-phenylene-p-phenylene-33-crown-10 (12b), 5...