Comparative study of the13C nuclear magnetic resonance shifts of carbonyl and thiocarbonyl compounds
作者:Alan R. Katritzky、Stanislaw Sobiak、Charles M. Marson
DOI:10.1002/mrc.1260260805
日期:1988.8
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 13CO and 13CS are established depending on whether or not Y or Z is linked through an O atom to the CX group. General equations for 13CO and 13CS 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.
Selenium showed excellent catalytic activity for carbonothiolation of alcohols with carbonmonoxide and sulfur under mild conditions. S-Alkyl carbonothioates were synthesized in good yields from various alcohols, carbonmonoxide, elemental sulfur, and alkyl halides in the presence of selenium-catalyst.