Some Fluoro and Nitro Analogues of Hallucinogenic Amphetamines
作者:Jara、Torres、Cassels、Rezende
DOI:10.1080/00397919408011201
日期:1994.2
The preparation of the fluoro and nitro analogues (2)-(5) of the hallucinogens 2,4,5-trimethoxy- and 2-methoxy-4,5-methylenedioxy-amphetamine is described.
Pt(IV)-catalyzed generation and [4+2]-cycloaddition reactions of o-quinone methides
Novel intermolecular and intramolecular generations of ortho-quinone methides and their formal [4+2]-cycloaddition reactions with olefins catalyzed by PtCl4 and AuCl3 under mild conditions have been developed. Good to excellent yields (up to 99%) and diastereoselectivity (up to >99:1) of the chromans were obtained. PtCl4 was found to be effective and compatible with various functional groups present