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Abstract
During studies of the reactions of ─N(H)SiMe 3 and ─N(Me)SiMe 3 derivatives of Cl 3 PNSO 2 Cl with acetonitrile and BCl 3 we have obtained six-membered polyheteroatomic cycles ⌈P(Cl 2 )NSO 2 (Cl)N(H) C(Me)N⌉ and ⌈P(Cl 2 )NS(O)(Cl)OB(Cl 2 )N(Me)⌉.1, 2 In the system Ph 2 PCl 3 , H 2 NSO 2 Cl and HN(SiMe 3 ) 2 we have identified and isolated several P─N─S cycles, e.g. the reaction of Ph 2 PCl 3 with H 2 NSO 2 Cl gives Ph 2 ClPNSO 2 Cl3 which with HN(SiMe 3 ) 2 reacts to ⌈S(O 2 )N(H)P(Ph) 2 N(H)SO 2 N(H)P(Ph) 2 N(H)⌉, ⌈S(O 2 )N(H)S(O 2 )N(H)P(Ph) 2 N(H)P(Ph) 2 N(H)⌉ and ⌈[S(O 2 )N(H) P(Ph) 2 NP(Ph) 2 N(H)]+⌉ Cl−; Ph 2 PCl 3 with HN(SiMe 3 ) 2 gives N[P(Ph) 2 N(H)SiMe 3 ] 2 + Cl−, and H 2 NSO 2 Cl with HN(SiMe 3 ) 2 leads to SO 2 (NHSiMe 3 ) 2 . The reaction of Ph 2 PCl 3 with HN(SiMe 3 ) 2 gives N(P(Ph) 2 NHSiMe 3 ) 2 Cl in a very good yield which was further used to syntheses of metal-containing heterocycles. By the reaction of N[P(Ph) 2 N(H)SiMe 3 ] 2 +Cl− with some covalent halogenides we have obtained six-membered heterocycles containing B, As, In, and Sn. The same cyclic compounds can also obtained by the reaction of N[P(Ph 2 )NH 2 ] 2 +Cl− or HN(P(R 2 )N(H)SiMe 3 ) 2 with covalent halogenides.4−6 However, the synthetic route via N[P(Ph) 2 NHSiMe 3 ] 2 +Cl− is more convenient and gives the compounds in almost quantitative yields. The identity of all compounds was unambiguously establised by their X-ray structure determination.
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