Oxoketene dithioacetals as versatile synthons for alternative 1,3 to 1,11 carbonyl transpositions: A new polyene synthesis
作者:Malapaka Chandrasekharam、Chitoorthekkathil V Asokan、Hiriyakksnavar Ila、Hiriyakkanavar Junjappa
DOI:10.1016/s0040-4039(00)88875-9
日期:1990.1
strategy for 1,7 to 1,I1 carbonyI transpositions involving 1,2 addition of sodium borohydride or Grignard reagents to polyenyl oxoketene dithioacetals obtained by condensation of bis(methylthio)polyenals 1- with active methylene ketones, followed by borontrifluoride etherate catalyzed methanolysis of the resulting polyenyl carbinol acetals to give 1,n transposed polyene esters has been described.