1998 organo-phosphorus compounds, nonmetal heterocycles

organo-phosphorus compounds, nonmetal heterocyclesS 0087

40 - 191Organophosphorus Compounds. Part 130. Hydrostannylation ofPhosphaalkenes. — The title reactions of (I), (IV), and (VII) withtriorganotin hydrides proceed by different routes. The hydrides (II) undergoregioselective 1,2-addition to the double bond of the aminophosphoalkene(I) to give the stannylphosphanes (III) while the reactions of (IV) with tri-organotin hydrides proceed via cleavage of triorganotin halide and formationof a diphosphene intermediate which reacts to give the cyclophosphanes (V)and (VI). Finally, the reactions of phosphaalkene (VII) are not selective, anddiphosphetane (VIII) is isolated from a mixture of products. — (SCHMITZ,M.; LEININGER, S.; BERGSTRAESSER, U.; REGITZ, M.; Heteroat. Chem.9 (1998) 4, 453-460; Fachbereich Chem., Univ. Kaiserslautern, D-67663Kaiserslautern, Germany; EN)

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