Chelating monoborane phosphines: Rational and high-yield synthesis of [(COD)Rh{(eta(2)-BH3)Ph2PCH2PPh2}][PF6] (COD=1,5-cyclooctadiene)

Reference:

Ingleson, M., Patmore, N. J., Ruggiero, G. D., Frost, C. G., Mahon, M. F., Willis, M. C. and Weller, A. S., 2001. Chelating monoborane phosphines: Rational and high-yield synthesis of [(COD)Rh{(eta(2)-BH3)Ph2PCH2PPh2}][PF6] (COD=1,5-cyclooctadiene). Organometallics, 20 (21), pp. 4434-4436.

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Official URL:

http://dx.doi.org/10.1021/om0103759

Abstract

The rational and high-yield synthesis of [(COD)Rh{(eta (2)-BH3)Ph2PCH2PPh2}][PF6] (1), which bears a chelating monoborane phosphine, is reported; the solid-state structure shows that the borane coordinates to the metal via two 2e-3c B-H-Rh bonds, which in solution at room temperature are fluxional between all three B-H bonds. Complex 1 is isolated as an air-stable crystalline salt, and its applicability as a catalyst in organic synthesis has been demonstrated in the coupling of boronic acids with enones.

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