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- W2106301176 abstract "Reactions of (NPCl2)3 with NaNCO in the presence of aliphatic alcohols have been investigated. Using an equimolar amount of NaNCO in refluxing acetonitrile, high yields of mono(urethane) derivatives N3P3Cl5(NHCO2R) were obtained. Disubstitution is mainly non-geminal. Reactions of (NPCl2)3 with AgNCO and methanol in acetonitrile follow a quite different pattern and lead to the formation of three products with basically geminal structures, e.g. gem-N3P3Cl4(OR)(NHCO2R), gem-N3P3Cl4(NHCO2R)2, and a spiro derivative (NPCl2)2NP[N(CO2R)C(O)NHC(CH3)N]. The crystal structure of the last compound (R = CH3) has been determined. The difference between the reaction pathways observed for NaNCO and AgNCO is discussed in terms of SN2 and SN1 mechanisms, respectively. An improved synthesis of (NPCl2)2NP(NH2)(NCO) and its reactions with alcohols and amines are described." @default.
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- W2106301176 date "1994-01-01" @default.
- W2106301176 modified "2023-09-26" @default.
- W2106301176 title "Preparation of urethane and urea derivatives of (NPCl2)3. Crystal structure of a spirocyclic phosphazene with a phosphacyanuric loop" @default.
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- W2106301176 doi "https://doi.org/10.1039/dt9940000577" @default.
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