1,6-Dibromohexa-1,3,5-triene − Stereocontrolled Synthesis of Monosubstituted and Disubstituted Hexatrienes by Palladium-Catalysed Cross-Coupling Reactions
作者:Pierre Villiers、Nicolas Vicart、Yvan Ramondenc、Gérard Plé
DOI:10.1002/1099-0690(200102)2001:3<561::aid-ejoc561>3.0.co;2-r
日期:2001.2
a versatile precursor for the synthesis of conjugated 1,3,5-trienic derivatives of controlled configuration. In this paper, we describe the stereocontrolled synthesis of E,E,Z, E,E,E and Z,E,Z isomers of α-bromo-ω-substituted-1,3,5-hexatrienes and 1,6-disubstituted-1,3,5-hexatrienes. The synthesis is based on palladium-catalysed single or double cross-coupling reactions between the three isomers − 1E
1,6-二溴己六,1,3,5-三烯是我们先前所描述的,可通过与溴亚甲基三苯基磷烷缩合而从5-溴戊二-2,4-二烯容易地获得,是合成共轭1,3受控构型的5-三烯衍生物。在本文中,我们描述了α-溴-ω-取代-1,3,5-己三烯和1,6-二取代的E,E,Z,E,E,E和Z,E,Z异构体的立体控制合成-1,3,5-己三烯。合成基于钯催化的三种异构体-1 E, 3 E, 5 Z,1 E, 3 E, 5 E和1 Z之间的单或双交叉偶联反应,中间体1,6-二溴己-1,3,5-三烯和各种有机锌试剂的3 E, 5 Z-。