Versatile method for the synthesis of 4-substituted 6-methyl-3-oxabicyclo[3.3.1]non-6-ene-1-methanol derivatives: Prins-type cyclization reaction catalyzed by hafnium triflate
作者:Masayuki Nakamura、Kenji Niiyama、Takeru Yamakawa
DOI:10.1016/j.tetlet.2009.08.120
日期:2009.11
A versatile method for the synthesis of 4-substituted 6-methyl-3-oxabicyclo[3.3.1]non-6-ene-1-methanol derivatives has been developed using Prins-type cyclization reaction between aldehydes and O-protected/unprotected cyclohex-3-ene-1,1-dimethanol. Under optimized reaction conditions using hafnium triflate, various substrates, including functionalized benzaldehydes and heteroaromatic carbaldehydes
利用醛与O-保护/未保护的环己基之间的Prins型环化反应,开发了一种通用的合成4-取代的6-甲基-3-氧杂双环[3.3.1]非-6-烯-1-甲醇衍生物的方法-3-烯-1,1-二甲醇。在使用三氟甲磺酸ha的优化反应条件下,各种底物,包括官能化的苯甲醛和杂芳族甲醛,均能以高收率获得环化产物。