Direct Synthesis of Cycloalkanes from Diols and Secondary Alcohols or Ketones Using a Homogeneous Manganese Catalyst
作者:Akash Kaithal、Lisa-Lou Gracia、Clément Camp、Elsje Alessandra Quadrelli、Walter Leitner
DOI:10.1021/jacs.9b08832
日期:2019.11.6
cycloheptane rings were constructed from substituted 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol, and sterically hindered ketones following a (4 + 1), (5 + 1), and (6 + 1) strategy, respectively. This reaction provides an atom economic methodology to construct two C-C bonds at a single carbon center generating high-value cycloalkanes from readily available alcohols as feedstock using an earth-abundant
使用二醇和仲醇或酮通过级联借氢序列开发了一种合成取代环烷烃的方法。使用非贵重且空气稳定的锰催化剂 (2 mol%) 进行此转化。研究了各种取代的 1,5-戊二醇(3-4 当量)和取代的仲醇(1 当量),以非对映选择性方式制备一系列取代的环己烷。类似地,环戊烷、环己烷和环庚烷环由取代的 1,4-丁二醇、1,5-戊二醇和 1,6-己二醇以及位阻酮在 a (4 + 1)、(5 + 1)、和 (6 + 1) 策略,分别。