Abstract
Abstract The (silylamino)phosphines Me3SiN(R)PMe2 (1: R = SiMe3; 2: R = Me) react smoothly with CS2 to yield the zwitterions Me3SiN(R)P+Me2CS2- (3: R = SiMe3; 4: R = Me) as red solids. No cleavage of or insertion into P[sbnd]N or Si[sbnd]N bonds is observed in these reactions. Compound 3 reacts with MeI to yield the S-methylated phosphonium salt [(Me3Si)2NP+Me2C(S)SMe]I− (5). Upon heating, 5 readily evolves Me3SiI to give the thioester-substituted phosphoranimine Me3SiN[dbnd]PMe2C(S)SMe (6) as a distillable red liquid.
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