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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064

Abstract

OLIVEIRA, Gelson Manzoni de. An alternative way to the Appel's synthesis of PPh2Si(CH3)3; preparation and purification of PPh2H (Ph = phenyl). Quím. Nova [online]. 2001, vol.24, n.1, pp.133-134. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422001000100022.

The unexpected low yield in the Appel's synthesis of PPh2Si(CH3)3 can be attributed to the presence of phenyllithium and its interfering reactions. The method was carried out with hydrolysis of the products formed by the reaction of PPh3 with metallic lithium, phenyllithium and lithiumdiphenylphosphide. PPh2Si(CH3)3 was obtained by subsequent reaction of the resulting diphenylphosphin with elemental lithium and ClSi(CH3)3.

Keywords : organosilylphosphines; lithiumdiphenylphosphide; diphenylphosfide anion.

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