Atom-Economical Synthesis of Functionalized Cycloalkanes via Catalytic Redox Cycloisomerization of Propargyl Alcohols
作者:Barry M. Trost、Alexander Breder、Bao Kai
DOI:10.1021/ol300278x
日期:2012.4.6
cycloalkanes from propargyl alcohols is reported. This high-yielding one-pot process involves a sequence consisting of a Ru-catalyzed redox isomerization of ynols into enones or an enal followed by an intramolecular Michael addition of a variety of carbon nucleophiles. Furthermore, an asymmetric variant of this protocol realized by the aid of a chiral nonracemic diamine catalyst, which provides the
据报道,由炔丙醇直接合成环烷烃的原子经济方法。这种高产率的一锅法涉及一个序列,该序列由Ru催化的炔诺醇的氧化还原异构化为烯酮或烯醛,然后在分子内迈克尔加成各种碳亲核试剂。此外,提出了通过手性非外消旋二胺催化剂实现的该方案的不对称变体,其提供高达97%ee的环化产物。