Dithiocarbamates,Thiocarbamic Esters,Dithiocarboimidates,Guanidines,Thioureas,Isothioureas, nd Tetraazathiapentalene Derived from 2-Aminobenzothiazole

摘要

Reactions between CS_2 and the exocyclic amino groups of 2-aminobenzothiazoles gave series of molecules bearing thio-urea,isothiourea,dithiocarbamate,dithiocarboimine,di-methyldithiocarbamate,methyldithiocarbamate,S-CH_3 and O-alkyl thiocarbamic ester,and guanidine groups.Preferred tautomers and conformers were determined.Most compounds present coordinative bonds between the endocyclic sulfur atom,which behaves as a Lewis acid,and oxygen,nitrogen,and sulfur acting as bases.A new dibenzothiazolyl-tetraazathiapentalene containing a T-shaped hypervalent sulfur atom and displaying "single bond-no bond resonance" is discussed.X-ray structures of eleven compounds are reported.