REACTION OF POLYMERIZATION-RESISTANT 1,2-DITHIOLANES WITH LITHIATED PICOLINES: SIMPLE RING OPENING AND 1,3-DITHIANE FORMATION
作者:Masato Tazaki、Shigeyuki Okai、Toshihiko Hieda、Shizuo Nagahama、Makoto Takagi
DOI:10.1080/10426509608046352
日期:1996.5.1
Abstract Reaction of polymerization resistant 1,2-dithiolanes 1 with excess pyridylmethyllithiums 3 in THF gave the corresponding ring-opened products 2 in good yields, but the by-products 2-pyridyl-1,3-dithianes 5 and 1,3-propanedithiols 6 could not be excluded. Addition of hexamethylphosphoric triamide (HMPT) to the reaction mixture resulted in the selective formation of 5.
摘要 耐聚合的 1,2-二硫杂环戊烷 1 与过量的吡啶基甲基锂 3 在 THF 中反应得到相应的开环产物 2,产率良好,但副产物 2-吡啶基-1,3-二硫烷 5 和 1,3-丙二硫醇6 不能排除。向反应混合物中加入六甲基磷酰三胺 (HMPT) 导致选择性形成 5。