A Highly Lewis Acidic Strontium  ansa ‐Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization | Zendy

Dabringhaus Philipp | Zendy; Schorpp Marcel | Zendy; Scherer Harald | Zendy; Krossing Ingo | Zendy

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A Highly Lewis Acidic Strontium ansa ‐Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization

Author(s) -

Dabringhaus Philipp,

Schorpp Marcel,

Scherer Harald,

Krossing Ingo

Publication year - 2020

Publication title -

angewandte chemie

Language(s) - English

Resource type - Journals

eISSN - 1521-3757

pISSN - 0044-8249

DOI - 10.1002/ange.202010019

Subject(s) - lewis acids and bases , isobutylene , chemistry , catalysis , strontium , lewis acid catalysis , metathesis , polymerization , polymer chemistry , salt (chemistry) , medicinal chemistry , organic chemistry , copolymer , polymer

The potential of a dicationic strontium ansa ‐arene complex for Lewis acid catalysis has been explored. The key to its synthesis was a simple salt metathesis from SrI 2 and 2 Ag[Al(OR F ) 4 ], giving the base‐free strontium‐perfluoroalkoxyaluminate Sr[Al(OR F ) 4 ] 2 (OR F =OC(CF 3 ) 3 ). Addition of an ansa ‐arene yielded the highly Lewis acidic, dicationic strontium ansa ‐arene complex. In preliminary experiments, the complex was successfully applied as a catalyst in CO 2 ‐reduction to CH 4 and a surprisingly controlled isobutylene polymerization reaction.

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