NEW TRIARYLMETHYL DERIVATIVES - BLOCK GROUPS - FOR ROTAXANES AND POLYROTAXANES

Five triarylcarbinols (8, three new compounds) were synthesized. Using carbanion chemistry the triarylmethanes (13, five new compounds) made by formic acid reduction of 8 were converted to the omega,omega,omega -triarylalkanols (15,three new compounds) and thence to the chloro (17 ) and iodo (18) derivatives (five new compounds). Via carbocation chem istry p-(triarylmethyl)phenols (20,two new compounds) and aniline (21, new compound) were produced. Alkylation of 20 yielded alcohol (22), b enzylic bromide (23), and carboxy (25) functionalized derivatives. The alcohol, halide, phenol, aniline, and carboxylic acid functionalized triarylmethane compounds are suitable end blocking groups for rotaxane s and polyrotaxanes.