Synthesis and spectral studies of (1,3-diketonato)triphenylantimony(V) complexes
作者:V.K. Jain、R. Bohra、R.C. Mehrotra
DOI:10.1016/s0022-328x(00)94363-8
日期:1980.1
Ph3SbBr2 reacts with Na[RCOCHCOR′] to form compounds of the type Ph3SbBr(RCOCHCOR′) (where R = R′ = CH3, C(CH3)3 and R ɳ R′ = CH3, C6H5; CH3, 4′-MeC6H4; CH3, 4′-MeOC6H4; CH3, 4′-ClC6H4; CH3, 4′BrC6H4 and CF3, 2-C4H3S). Reactions of Ph3Sb(OMe)2 with RCOCH2COR′ yield Ph3Sb(OMe) (RCOCHCOR′). From molecular weight, IR and NMR data, it is concluded that 1,3-diketone ligand moiety behaves as a bidentate
facile and efficient one-step procedures for the regioselectivesynthesis of 7-aryl-5-methyl- and 5-aryl-7-methyl-2-amino-[1,2,4]triazolo[1,5-a]pyrimidines have been developed, via reactions of 3,5-diamino-1,2,4-triazole with variously substituted 1-aryl-1,3-butanediones and 1-aryl-2-buten-1-ones, respectively. The excellent yield and/or regioselectivity shown by the reactions decreased when ethyl 5-amino-1