Inorganica chimica acta

Carbon-oxygen and related R X bond cleavages mediated by (silox) 3 Ti and other Group 4 derivatives (silox= t Bu 3 SiO)

KJ Covert, AR Mayol, PT Wolczanski

Index: Covert, Katharine J.; Mayol, Ana-Rita; Wolczanski, Peter T. Inorganica Chimica Acta, 1997 , vol. 263, # 1-2 p. 263 - 278

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Citation Number: 29

Abstract

Halogen atom abstractions by (silox) 3Ti (1) from CCl4, ClRh (PPh3) 3, Br2 and I2 produced (silox) 3TiCl (2),(silox) 3TiBr (3) and (silox) 3TiI (4), respectively. Treatment of 1 with MeI afforded a 1: 1 mixture of 4 and (silox) 3TiMe (5), regardless of [MeI], implicating a rough I abstraction rate constant of ka< 2× 105M− 1s− 1. Exposure of 2 to NaI (THF) or MeMgBr (Et2O) provided independent syntheses of 4 and 5, respectively. Br abstraction by 1 from ...