Metal‐Free Deoxygenation of Chiral Nitroalkanes: An Easy Entry to α‐Substituted Enantiomerically Enriched Nitriles
作者:Margherita Pirola、Chiara Faverio、Manuel Orlandi、Maurizio Benaglia
DOI:10.1002/chem.202100889
日期:2021.7.16
mild and chemodivergent transformation involving nitroalkanes has been developed. Under optimized reaction conditions, in the presence of trichlorosilane and a tertiary amine, aliphatic nitroalkanes were selectively converted into amines or nitriles. Furthermore, when chiral β-substituted nitro compounds were reacted, the stereochemical integrity of the stereocenter was maintained and α-functionalized
已经开发了涉及硝基烷烃的无金属、温和且化学发散的转化。在优化的反应条件下,在三氯硅烷和叔胺的存在下,脂肪族硝基烷烃被选择性地转化为胺或腈。此外,当手性 β-取代硝基化合物反应时,立体中心的立体化学完整性得以保持,并在不损失对映体过量的情况下获得 α-官能化腈。该方法已成功应用于手性 β-氰基酯、α-芳基烷基腈和 TBS 保护的氰醇的合成,包括四种活性药物成分(布洛芬、tembamide、aegeline 和地诺巴胺)的直接前体。