Synthesis of Oligo(1,6-heptadiynes) with a Single Structure and Terminal Methylene Groups Using Molybdenum-Based Wittig and Metathesis Chemistry. 1. 2,6-Dimethylphenylimido Systems
作者:Corina Scriban、Richard R. Schrock、Peter Müller
DOI:10.1021/om8007585
日期:2008.12.8
ORF6 = OCMe(CF3)2) gives [Mo][b][Mo]. An “Mo-Wittig” reaction between [Mo][b][Mo] and 2 equiv of the aldehyde, [CH2][b][O], then gives the “trimer”, [CH2][b3][CH2]. Treatment of [CH2][b3][CH2] with 2 equiv of [Mo][CHCMe2Ph] gives [Mo][b3][Mo], which upon treatment with 2 equiv of [CH2][b][O] gives the “pentamer”, [CH2][b5][CH2], which contains 11 double bonds in conjugation in a molecule in which the
在本文中,我们演示了一种合成二异丙基二炔丙基丙二酸丙二酯[CH 2 ] [b x ] [CH 2 ](x = 2,3,4,5)的低聚物的方法,其中“ b”重复单元与五个重复单元相同。二异丙基二炔丙基丙二酸酯的尾到尾环聚合反应中形成的二元环和亚甲基封端。例如,“单体”,[CH 2 ] [b] [CH 2 ]和2当量的Mo(NAr')(CHCMe 2 Ph)(OR F6)2([Mo] [CHCMe 2 Ph]其中Ar'= 2,6-Me 2 C 6 H 3和F6= OCMe(CF 3)2)给出[Mo] [b] [Mo]。[Mo] [b] [Mo]与2当量的醛[CH 2 ] [b] [O]之间进行“ Mo-Wittig”反应,然后得到“三聚体” [CH 2 ] [b 3 ] [CH 2 ]。用2当量的[Mo] [CHCMe 2 Ph]处理[CH 2 ] [b 3 ] [CH 2 ]得到[Mo] [b