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。