cyclic and open chain 1,3-dicarbonyl compounds; ylides from open chain 1,3-dicarbonyl compounds, which readily decompose on standing to produce C-phenylation product, can be efficiently trapped by sulphenes to afford 1,3-oxathiole-3,3-dioxides in good yields.
氧化
铋铋是通过使三苯基氧化
铋或二
氯化铋与环状和开放链1,3-二羰基化合物的钠盐反应而生成的。来自开链的1,3-二羰基化合物的烷基化物在静置时易于分解产生C-苯基化产物,可以被亚砜有效地捕集,从而以良好的收率得到1,3-氧杂
硫醇-3,3-二氧化物。