Intermolecular Enantioselective Heck–Matsuda Arylations of Acyclic Olefins: Application to the Synthesis of β-Aryl-γ-lactones and β-Aryl Aldehydes
作者:Caio C. Oliveira、Ricardo A. Angnes、Carlos Roque D. Correia
DOI:10.1021/jo400378g
日期:2013.5.3
intermolecular Heck–Matsuda arylation of acyclic allylic alcohols. Aryldiazonium tetrafluoroborates were applied as arylating agents in the presence of Pd(TFA)2 and a chiral, commercially available, bisoxazoline ligand. The methodology is straightforward, robust, scalable up to a few grams, and of broad scope allowing the synthesis of a range of β-aryl-carbonyl compounds in good to high enantioselectivities
我们在本文中描述了一种用于无环烯丙基醇的对映选择性分子内Heck-Matsuda芳基化的合成方法。在Pd(TFA)2和手性的市售双恶唑啉配体的存在下,将芳基重氮四氟硼酸盐用作芳基化剂。该方法简单,稳健,可扩展至几克,并且适用范围广,可以合成一系列良好至高对映选择性和高产率的β-芳基-羰基化合物。这种新的对映选择性的Heck-Matsuda芳基化反应可以合成β-芳基-γ-内酯和β-芳基醛,它们在合成生物活性化合物(如(R)-baclofen,(R)-咯利普兰,(S)-姜黄烯,(S)-脱氢姜黄烯和(S)-肿瘤素。