Addition reactions of acetylenic esters with substituted thioureas
作者:J. W. Lown、J. C. N. Ma
DOI:10.1139/v67-159
日期:1967.5.1
Thiourea and monosubstituted and sym-disubstituted alkyl and aryl thioureas react with dimethyl acetylenedicarboxylate to give, in a good yield, 2,3-dihydro-1,3-thiazin-4-ones, and not thiazolidino...
AbstractA one-potsynthesis of alkyl 3,4-dihydro-4-oxo-2H-1,3-thiazine-6-carboxylates from dialkyl acetylenedicarboxylates and N,N′-dialkylthioureas in the presence of triphenylphosphine (20 mol%) is described. Graphical Abstract
摘要在三苯基膦(20摩尔%)存在下,由乙炔基二羧酸二烷基酯和N,N'-二烷基硫脲形成的一锅法合成3,4-二氢-4-氧代-2 H -1,3-噻嗪-6-羧酸烷基酯是描述。 图形概要