A facile and efficient one-pot synthesis of thiirans by the reaction of benzoxazolyl β-ketosulfides with NaBH4/NaOH
作者:Nobuhiko Yamada、Masayoshi Mizuochi、Masahiro Takeda、Hiroyuki Kawaguchi、Hiroyuki Morita
DOI:10.1016/j.tetlet.2007.12.058
日期:2008.2
Convenient and efficient procedures for thiirans have been developed via a one-pot reaction of benzoxazolyl β-ketosulfides with NaBH4 and NaOH in MeOH and THF. The reaction is considered to proceed via the spiro intermediate by the ipso-addition of β-hydroxygroup, which is formed by the NaBH4 reduction of β-keto group, to 2-position of benzoxazole group.
通过苯并恶唑基β-酮硫醚与NaBH 4和NaOH在甲醇和四氢呋喃中的一锅反应,已经开发出了简便有效的硫烷方法。该反应被认为是通过螺通过中间进行本位β-hydroxygroup,这是由加入NaBH形成-addition 4还原β酮基,苯并恶唑到组的2位上。