76926-49-3Relevant academic research and scientific papers
4-Dodecylbenzenesulfonic acid (DBSA) promoted solvent-free diversity-oriented synthesis of primary carbamates, S-thiocarbamates and ureas
Sardarian, Ali Reza,Inaloo, Iman Dindarloo
, p. 76626 - 76641 (2015/09/22)
A simple and highly efficient solvent-free method for the conversion of alcohols, phenols, thiols and amines to primary carbamates, S-thiocarbamates and ureas in the presence of 4-dodecylbenzenesulfonic acid (DBSA) as a cheap and green Bronsted acid reagent has been described. All products were obtained in good to excellent yields and characterized using FT-IR, 1H- and 13C-NMR, MS and CHNS techniques.
Comparative Study of the 13C Nuclear Magnetic Resonance Shifts of Carbonyl and Thiocarbonyl Compounds
Katritzky, Alan R.,Sobiak, Stanislaw,Marson, Charles M.
, p. 665 - 670 (2007/10/02)
The 13C spectra of nine novel and fifteen known derivatives YC(:X)Z with X = O or S are reported and compared with literature data.Two linear relationships between 13C=O and 13C=S are established depending on whether or not Y or Z is linked through an O atom to the C=X group.General equations for 13C=O and 13C=S in terms of the attached groups are also deduced.The 13C chemical shifts of n-butyl and n-octyl groups attached to the heteroatoms in this series of compounds are recorded and discussed.
