Arylzinc complexes as new initiator systems for the production of isobutene copolymers with high isoprene content

S Garratt, A Guerrero, DL Hughes…

Index: Garratt, Shaun; Guerrero, Antonio; Hughes, David L.; Bochmann, Manfred Angewandte Chemie - International Edition, 2004 , vol. 43, # 16 p. 2166 - 2169

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Citation Number: 24

Abstract

Variable-temperature NMR spectroscopy confirmed the formation of carbocations in this system. For example, mixtures of cumyl chloride and [Zn (C6F5) 2]· toluene in CD2Cl2 at À788C show the signals of the PhCMe2+ cation as well as those of phenyltrimethylindane, the product of cationic cyclization (Scheme 1).[16, 17] The formation of nonnucleophilic zincate anions in this system was demonstrated by the reaction of Ph3CCl with [Zn (C6F5) ...