Electrophilic quenching of dianions of 4-[5′-sulfonylmethylisoxazolyl]-1,4-dihydropyridines. A direct route to functionalized Hantzsch Esters
摘要:
An expedient entry into the preparation of Hantzsch Esters is presented. The method involves dilithiation and selective electrophilic quenching of 4-[5'-sulfonylmethylisoxazolyl]-1,4-dihydropyridines.