A Novel 3,4-Bis(sulfenyl)- or 4-Selenenyl-3-sulfenylpenta-2,4-dienylation of Aldehydes Using 4-Ethoxy-1,2-bis(sulfenyl)- or 1-Selenenyl-2-sulfenyl-buta-1,3-dienyl Lithiums
作者:Mitsuhiro Yoshimatsu、Yasutaka Matsuura、Kohei Gotoh
DOI:10.1248/cpb.51.1405
日期:——
3,4-Dichalcogenopenta-2,4-dienylation of aldehydes proceeded in good to high yields using 4-ethoxy-1-(benzenesulfenyl)-2-(methanesulfenyl)- (5), 4-ethoxy-1,2-bis(benzenesulfenyl)but-1,3-diene (6), and 1-selenenyl derivatives 7 and 8. This novel four-carbon homologation could be applied to a synthesis of 3,4,7,8-tetrakis(benzenesulfenyl)-10,10-dimethylundeca-2,4,6,8-tetraenal (20).
醛的3,4-二硫代亚环戊二烯基化反应在使用4-乙氧基-1-(苯硫基)-2-(甲硫基)(5),4-乙氧基-1,2-双(苯硫基)丁-1,3-二烯(6),以及1-硒硫基衍生物7和8的情况下,以良好到高产率进行。这种新颖的四碳同系化方法可以应用于3,4,7,8-四(苯硫基)-10,10-二甲基十一-2,4,6,8-四烯醛(20)的合成。