Synthesis of .alpha.-halocinnamate esters via solvolytic rearrangement of trichloroallyl alcohols
摘要:
Aryl trichlorovinyl ketones undergo regioselective reduction to the corresponding carbinols with sodium borohydride in alcoholic solvents and are transformed to the (Z)-alpha-chlorocinnamate ester derivatives via an acid-catalyzed allylic rearrangement. Michael addition of ammonia to these ester derivatives affords cis- and/or trans-aziridine amides. The facile rearrangement allows the synthesis of d,l-phenylalanine derived from perchloroethylene and toluene.
Synthesis of .alpha.-halocinnamate esters via solvolytic rearrangement of trichloroallyl alcohols
摘要:
Aryl trichlorovinyl ketones undergo regioselective reduction to the corresponding carbinols with sodium borohydride in alcoholic solvents and are transformed to the (Z)-alpha-chlorocinnamate ester derivatives via an acid-catalyzed allylic rearrangement. Michael addition of ammonia to these ester derivatives affords cis- and/or trans-aziridine amides. The facile rearrangement allows the synthesis of d,l-phenylalanine derived from perchloroethylene and toluene.