Chemical communications

Phosphazene base-promoted halogen–zinc exchange reaction of aryl iodides using diethylzinc

M Ueno, AEH Wheatley, Y Kondo

Index: Ueno, Masahiro; Wheatley, Andrew E. H.; Kondo, Yoshinori Chemical Communications, 2006 , # 33 p. 3549 - 3550

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Abstract

Phosphazene bases 1 developed by Schwesinger and proazaphosphatranes 2 developed by Verkade are known to be strong non-metallic organic superbases. Among them, t-Bu-P4 base shows extremely high basicity and has been used for various selective deprotonative transformations. 3 The strong affinity of t-Bu-P4 base for protons is regarded as synthetically useful, however the ability of t-Bu-P4 base to activate organometallic compounds is ...