作者:Shengzong Liang、Tatsuya Kumon、Ricardo A. Angnes、Melissa Sanchez、Bo Xu、Gerald B. Hammond
DOI:10.1021/acs.orglett.9b01337
日期:2019.5.17
An unprecedented deformylative halogenation of aldehydes to alkyl halides is presented. Under oxidative conditions, 1,4-dihydropyridine (DHP), derived from an aldehyde, generated a C(sp3)- radical that coupled with a halogen radical that was generated from inexpensive and atom-economical halogen sources (NaBr, NaI, or HCl), to yield an alkyl halide. Because of the mild conditions, a wide range of functional
提出了一种前所未有的醛去酰卤化为烷基卤化物的方法。在氧化条件下,衍生自醛的 1,4-二氢吡啶 (DHP) 生成 C(sp3)- 自由基,该自由基与廉价且原子经济的卤素源(NaBr、NaI 或 HCl)生成的卤素自由基偶联。 ),得到卤代烷。由于条件温和,可以耐受多种官能团,并且实现了优异的位点选择性。