Unsaturated nitrogen compounds containing fluorine. Part 10 [1]. Reaction of 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene with halide ion and oxygen- and sulphur-centred nucleophiles and of its 2,5-di-iodo analogue with reducing agents and certain nucleophiles [2]
作者:Ahmed O.A. Eltoum、Neil J. O'Reilly、Anthony E. Tipping
DOI:10.1016/s0022-1139(00)80480-7
日期:1993.11
Di-iodoazine 3b undergoes ready reaction with aniline (1:2 molar ratio) and potassium diethyl phenylmalonate (1:1 molar ratio) to afford the monosubstituted compounds PhNC(CF3)NHNClCF3 and (EtO2C)2CPhC(CF3)NNClCF3, respectively. Azine 1 is not reduced by the reagents NaH, LiAlH4 and NaBH4, but di-iodoazine 3b is reduced by tri-n-butyltin hydride at c. 90 °C to give mainly the compounds CF3CHNNCHCF3, CF3CHNNClCF3
的吖嗪CF 3 CRNNCRCF 3(RF,I,的PhO,2,4-氯2 ç 6 ħ 3 O,PHS和ETO)由处理的标题dichloroazine形成1与过量的适当的亲核试剂,与硫化磷(V)在180°C下反应可定量获得2,5-双(三氟甲基)-1,3,4-噻二唑。在与NaOEt的反应中,化合物CF 3 C(OEt)NNC(ONa)CF 3也由存在的NaOH杂质产生。二碘嗪3b与苯胺(1:2摩尔比)和二乙基苯丙二酸二钾钾(1:1摩尔比)立即反应,得到单取代化合物PhNC(CF 3)NHNClCF 3和(ETO 2 C)2 CF CPHC(3 NNClCF)3,分别。试剂NaH,LiAlH 4和NaBH 4不会还原叠氮1,但在c时氢化三正丁基锡可将二碘嗪3b还原。90℃至主要得到化合物CF 3 CHNNCHCF 3,CF 3 CHNNClCF 3,CFCH 2 NHNClCF