Living Cyclopolymerization of 1,6-Heptadiyne Derivatives Using Well-Defined Alkylidene Complexes: Polymerization Mechanism, Polymer Structure, and Polymer Properties
作者:Harold H. Fox、Michael O. Wolf、Richard O'Dell、Beatrice L. Lin、Richard R. Schrock、Mark S. Wrighton
DOI:10.1021/ja00086a016
日期:1994.4
Mo(NAr)(CHCMe[sub 2]Ph)(OR[sub F6])[sub 2] (1a; Ar = 2,6-i-Pr[sub 2]C[sub 6]H[sub 3], OR[sub F6] = OCMe(CF[sub 3])[sub 2]) as the initiator in 1,2-dimethoxyethane (DME). The polymers show a high degree of conjugation ([lambda][sub max] > 500 nm) and have narrow molecular weight distributions. Poly(2a) is soluble in most organic solvents (THF, C[sub 6]H[sub 6], toluene, CH[sub 2]Cl[sub 2], CHCl[sub 3], DME
我们在这里报告了使用明确定义的亚烷基配合物作为引发剂的 1,6-庚二炔衍生物(通常为 4,4-二取代)的活性环聚合。二炔丙基丙二酸二乙酯 (2a)、二炔丙基丙二酸二叔丁基酯 (2b)、旋光二-(1R,2S,5R)-([减])-二炔丙基丙二酸薄荷酯 (2c([减]))、二-(1S, 2R,5S)-(+)-二炔丙基丙二酸薄荷酯 (2c(+)), di-(1R)-endo-(+)-fenyl二炔丙基丙二酸酯 (2d), 4,4-bis[[(p-tolylsulfonyl) oxy]甲基]-1,6-庚二炔 (3b)、4,4-双[(三甲基甲硅烷氧基)甲基]-1,6-庚二炔 (3c)、环状甲硅烷基醚、PhEtSi(OCH[sub 2])[sub 2] C-(CH[sub 2]C[三键]CH)[sub 2] (3d) 和 N,N-二炔丙基-2,4,6-三异丙基苯甲酰胺 (5b) 使用Mo(NAr)(CHCMe[sub