Synthesis of 1, 1, 6, 6-tetramethylphosphajulolidine

PG Edwards, SJ Paisey, RP Tooze

Index: Edwards, Peter G.; Paisey, Stephen J.; Tooze, Robert P. Journal of the Chemical Society, Perkin Transactions 1, 2000 , # 18 p. 3122 - 3128

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Abstract

Triphenylphosphine complexes of palladium( II) acetate are well known to catalyse the alkoxycarbonylation of propyne to methacrylate esters. 1 Recent studies have shown that this reaction is more effectively catalysed by analogous palladium complexes of phenylphosphabicyclononanes (PPBNs), and that the 4,2,1-PPBN isomer (1a) produces a significantly more active catalyst than the 3,3,1-PPBN isomer (1b). 2 These observations prompted a closer investigation of the co-ordination ...