Synthesis of Atropisomeric 1,8-Bis(4′,4′-dipyridyl)naphthalenes from 4-Trimethylstannylpyridines
作者:Christian Wolf、Bereket T. Ghebremariam
DOI:10.1055/s-2002-25769
日期:——
Two synthetic strategies towards atropisomeric 2′,2′-disubstituted 1,8-bis(4′,4′-dipyridyl)naphthalenes using Stille cross-coupling of trimethylstannylpyridine derivatives and 1,8-diiodonaphthalene have been investigated. Introduction of substituents into the pyridyl moieties prior to the cross-coupling step provides higher overall yields than derivatization of 1,8-bis(4′,4′-dipyridyl)naphthalene under Ziegler reaction conditions.
研究了使用三甲基甲锡烷基吡啶衍生物和 1,8-二碘萘的 Stille 交叉偶联来合成阻转异构体 2',2'-二取代 1,8-双(4',4'-联吡啶基)萘的两种策略。在交叉偶联步骤之前将取代基引入吡啶基部分可提供比在齐格勒反应条件下衍生化 1,8-双(4',4'-联吡啶基)萘更高的总产率。