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Micellar effects upon the reaction of cobalt complexes with alkyl halides

✍ Scribed by Rebecca J. Allen; Clifford A. Bunton

Publisher
Elsevier Science
Year
1976
Weight
612 KB
Volume
5
Category
Article
ISSN
0006-3061

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✦ Synopsis

The reactions of the cobalosime Co (DH); and the related Co(DOH)DOpn" are strongly catalyzed by cationic micelles of cetyltrimethylammonium bromide (CTABr). The rate enhancements for the cobaloxime reaction and for that of Co (DOH)DOpn" (in parentheses) are: EtBr -1 (8.5); ,2-C, H, I Cl, 220 (200); CLCH,CO;, 420 (173); ClCH,CH,CO;, 373. Anionic micelles of sodium lauryl sulfate inhibit the reaction of Co(DOH)DOpn" with ClCH,CO;, but do not affect that with nC, H, x CL The reactions of Co(DOH)DOpn', like those of the cobaloxime, are SN_ 3 displacements and in the absence of surfactant in M&H n-PrBr is more reactive than iso-PrBr.

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