Refine
Has Fulltext
- no (1)
Year of publication
- 2012 (1)
Document Type
- Article (1) (remove)
Language
- English (1)
Is part of the Bibliography
- yes (1)
Keywords
- Isothiocyanic acid (1) (remove)
Institute
- Institut für Chemie (1) (remove)
A simple and efficient method for the conversion of alcohols and phenols to primary O-thiocarbamates and S-thiocarbamates in the absence of solvent (solvent-free condition) using silica sulfuric acid (equivalent to SiO2-OSO3H) as a solid acid is described. The products are easily distinguished by IR, NMR and X-ray data. X-ray data of the compounds reveal a planar trigonal orientation of the NH2 nitrogen atom with the partial C,N double-bond character and the C=S or C=O groups in synperiplanar position with C-aryl-O and C-alkyl-S moieties, respectively. Moreover, the -O-CS-NH2 group which is perpendicular to the plane of the benzene ring in 1c and the central thiocarbamate -S-CO-NH2 group in 2b are essentially planar.