作者:K. Aboutayab、S. Caddick、K. Jenkins、S. Joshi、S. Khan
DOI:10.1016/0040-4020(96)00660-6
日期:1996.8
novel radical substitution reaction of aromatic sulfones is presented. Thus, α-heterocyclic aromatic sulphones derived from indole, pyrrole, pyrazole, furans and thiophenes undergo rapid and high yielding ipso-substitution to furnish organostannanes. This methodology has been extended to β-heterocyclic aromatic sulfones derived from indoline and dibenzofuran. The methodology has some liminations as
提出了一种通过芳族砜的新型自由基取代反应合成芳族锡烷的新方法。因此,衍生自吲哚,吡咯,吡唑,呋喃和噻吩的α-杂环芳族砜经历快速且高产率的ipso取代以提供有机锡烷。该方法已经扩展到衍生自二氢吲哚和二苯并呋喃的β-杂环芳族砜。该方法有一些局限性,如3-苯基磺酰基吲哚衍生物17和某些苯硫基取代的杂芳族体系22-24缺乏反应性。苯亚磺酰基取代的吲哚也可以进行所需的取代反应,如成功转化25到对应的锡烷4a上。