Reaction of Bromo Dipoles with (<i>Z</i>)-4-(Arylmethylene)azol-5-ones. Substrate-Controlled Synthesis of New Bromo-Substituted Heterocyclic Spirans and Unusual<i>N</i>-Benzoyl α-Aminoacids
作者:Francesco Foti、Giovanni Grassi、Francesco Risitano、Enrico Rotondo、Domenico Zona
DOI:10.1055/s-2004-829537
日期:——
Bromo spirans 6 and 7 and unusual α-aminoacids 8 were prepared as diastereoisomerically pure compounds from bromo dipoles and (Z)-4-arylmethyleneazolones.
The results of a study of the cycloaddition reaction of bromonitrilimine with (Z)-4-(arylmethylidene)isoxazol-5-ones and pyrazol-5-ones are reported. Spectroscopic and X-ray crystallographic data are presented to support structural assignments of the reaction products.