作者:Laxminarayan Bhat、Abraham Thomas、Hiriyakkanavar Ila、Hiriyakkanavar Junjappa
DOI:10.1016/s0040-4020(01)80925-x
日期:1991.1
α-acylketene dithioacetals in refluxing benzene affords α-acetoxyketene dithioacetals as major products which could be hydrolyzed to α-diketone dithioacetals under mild alkaline conditions. Under similar oxidative conditions, α-cinnamoyl ketene dithioacetals yield 2-acetoxycyclopentenone derivatives through an interesting oxidative Nazarov cyclization involving intermediate α-acetoxy dithioacetals accompanied
在回流的苯中,无环α-酰基乙烯酮二硫缩醛的四乙酸铅氧化得到α-乙酰氧基烯酮二硫缩醛作为主要产物,可以在温和的碱性条件下水解为α-二酮二硫缩醛。在相似的氧化条件下,α-肉桂酰基烯酮二硫缩醛通过有趣的氧化Nazarov环化反应生成2-乙酰氧基环戊烯酮衍生物,其中涉及中间α-乙酰氧基二硫缩醛并伴有1,2-酰基迁移。