Synthesis of Telechelic Olefin Polymers via Catalyzed Chain Growth on Multinuclear Alkylene Zinc Compounds
作者:Haruyuki Makio、Takashi Ochiai、Jun-ichi Mohri、Kouji Takeda、Toshiyuki Shimazaki、Yoko Usui、Sadahiko Matsuura、Terunori Fujita
DOI:10.1021/ja403626g
日期:2013.6.5
Multinuclear alkylene zinc (MAZ) compounds of the type EtZn-(R″-Zn)n-Et (R″ = ethyl and propyl branched alkylene groups) were synthesized by a simple one-step procedure in nonpolar hydrocarbon solvents from α,ω-dienes (e.g., 1,7-octadiene or 1,9-decadiene) and diethylzinc using a bis(salicylaldiminato)Zr(IV) complex, [(2-methylcyclohexyl)N═CH(2-O-C6H3-3,5-di-tert-butyl)]2ZrMe2, as a catalyst. The MAZ
EtZn-(R"-Zn)n-Et(R" = 乙基和丙基支化亚烷基)类型的多核亚烷基锌 (MAZ) 化合物是通过简单的一步程序在非极性烃溶剂中由 α,ω-合成的二烯(例如 1,7-辛二烯或 1,9-癸二烯)和二乙基锌使用双(水杨醛二亚氨基)Zr(IV) 络合物 [(2-甲基环己基)N=CH(2-O-C6H3-3,5-二叔丁基)]2ZrMe2,作为催化剂。MAZ 用作烯烃聚合的二价可逆链转移剂,产生遥爪锌金属化聚烯烃,其分子量可在很宽的范围内控制。锌封端遥爪作为进一步反应的聚合物前体,可以高产率转化为各种遥爪功能化聚烯烃。