5211-17-6Relevant articles and documents
13C NMR spectral assignment of five epimeric 3α- versus 3β-functionalized cholestane pairs
Ramos,Santos,Almeida,Motherwell,Costa
, p. 861 - 863 (2007/10/03)
13C NMR chemical shift assignments of five α- and β-epimeric pairs of cholestanes functionalized at C-3 are presented. Empirical increment estimations proved to be a valuable tool for the unequivocal structural elucidation when compared with th
Reduction et photoreduction de derives de l'acide carbonique influence de l'hexamethylphosphorotriamide
Dembele, Albert,Deshayes, Henri,Pete, Jean-Pierre
, p. 671 - 680 (2007/10/02)
Photoreduction and reduction of carbonic acid derivatives in HMPT have been compared.The highest yield of alkane was obtained from N,N-dimethylthiocarbamates either by the photochemical method or by reduction with a dissolved metal.Competitive reactions have been characterized: - during the photoreduction not only the alkane but products of a photo-Fries rearrangement and products of a homolytic cleavage were detected; - basic reactions can compete with the reduction of carbonic acid derivatives by sodium in HMPT.