作者:F.J.Lopez Aparicio、F.Zorrilla Benitez、F.Santoyo Gonzalez
DOI:10.1016/0008-6215(82)84002-0
日期:1982.12
to give mixtures variously of thiodiglycoaldehyde bis(dialkyl acetals) ( 3a,b ), cis -2,6-dialkoxy-1,4-oxathianes ( 5b-d ), and trans -2,6-dialkoxy-1,4-oxathianes ( 7a-c ). Thiodiglycolaldehyde bis(di-isopropyl acetal) ( 3c ) was not formed in the reaction of 1a and 2-propanol, but 3c was obtained after bromoacetaldehyde di-isopropyl acetal was treated with sodium sulfide. The stereoisomers corresponding
摘要硫二甘醇醛(2,2'-硫代双乙醛,1a)与甲醇,乙醇和2-丙醇分别反应,得到各种硫代二甘醇双(二烷基乙缩醛)(3a,b),顺式-2,6-二烷氧基-1, 4-氧杂蒽(5b-d)和反式-2,6-二烷氧基-1,4-氧杂蒽(7a-c)。在1a和2-丙醇的反应中没有形成硫代二甘醇醛双(二异丙基乙缩醛)(3c),但是将溴乙醛二异丙基乙缩醛用硫化钠处理后得到了3c。从无环二甲基缩醛3a获得对应于2,6-二甲氧基-1,4-氧杂蒽(5b,7a)的立体异构体。已经研究了1a与硫醇在酸性介质中的反应。与乙硫醇一起,硫代二甘醇双(二乙基二硫缩醛)是唯一的产物,但是硫代二甘醇双(二叔丁基二硫缩醛),顺式-2,由2-甲基-2-丙硫醇获得6-双(叔丁硫基)-1,4-二噻吩和反式-2,6-双(叔丁硫基)-1,4-二噻吩。在用过氧化氢氧化2,6-二烷氧基-1,4-氧杂蒽和2,6-双(烷硫基)-1,4-二恶烷的立体异构体的砜时,保留了构型,但2