Stereoselective approach to access 3-tert-Butyl-Dimethylsiloxy-2,6-Substituted piperidines through nucleophilic addition of N,O-acetals with organozinc reagents
作者:Zhao-Dan Chen、Zhuo Chen、Qiao-E Wang、Chang-Mei Si、Bang-Guo Wei
DOI:10.1016/j.tetlet.2020.152051
日期:2020.6
An efficient approach to access chiral 3-tert-butyl-dimethylsiloxy 2,6-disubstituted 6-benzyl piperidines was developed through nucleophilic addition of N,O-acetals with organozinc reagents. A number of substituted benzyl zinc reagents could react with N,O-acetals 6a-6e, affording the desired products 7a-7j and 9a-9q in good to excellent yields and with high diastereoselectivities.
通过与有机锌试剂亲核加成N,O-乙缩醛,开发了一种有效的手性3-叔丁基-二甲基甲硅烷氧基2,6-二取代的6-苄基哌啶。许多取代的苄基锌试剂可以与N,O-缩醛6a-6e反应,以高至极好的收率和高非对映选择性提供所需的产物7a-7j和9a-9q。