Trimethylsilyloxide-Catalysed Peterson Olefinations with 2,2-Bis(trimethylsilyl)-1,3-dithiane
作者:Atul Manvar、Donal F. O'Shea
DOI:10.1002/ejoc.201501185
日期:2015.11
The synthesis of the reagent 2,2-bis(trimethylsilyl)-1,3-dithiane was directly achieved in an excellent yield from1,3-dithiane in one step. The bench-stable reagent can be utilized for Peterson olefinations using either TMSOK/Bu4NCl or fluoride ion as promoter of α-silyl carbanion formation, thereby generating ketenedithioacetals, which are versatile intermediates in organic synthesis. Olefination
Extended Pummerer reaction of arylketene dithioacetal monoxides with aromatic compounds by means of trifluoromethanesulfonicanhydride proceeded in moderate to good yields. In the case of intramole...