Application of 1034-39-5. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1034-39-5, Name is Dibromotriphenylphosphorane
N,N’-Disubstituted diamides of dicarboxylic acids have been found to react with Ph3PBr2 to form intramolecular N-imidoylation products (5- or 6-iminolactams); only from N,N’-diphenylmaleamide the O-imidoylation product (N,N’-diphenylmaleimidic anhydride 6) was obtained.The imidic anhydride 6 in CH2Cl2 solution, in the presence of HBr undergoes a rearrangement to the respective iminolactam.Possible mechanisms of these reactions are discussed.Both the 13C NMR and 1H NMR spectra indicated the presence of Z,Z and Z,E-isomers in the imidic anhydride 6.
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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate