Cycloaddition in Synthesis of Sulfonamide Derivatives. VI Unexpected Products from the Reaction of Dithiocarbamate with Chlorosulfonyl Isocyanate a Novel Synthetic Route to 5-Amino-1,2,4-dithiazol-3-one and N,N-Disubstituted N'-Chlorosulfonylcarbamimidoyl Chloride
作者:Tsuneo Iwakawa、Tomohiro Sato、Akira Murabayashi
DOI:10.3987/com-93-6641
日期:——
Reaction of propyl N-methyl-N-phenyldithiocarbamate (1a) with chlorosulfonyl isocyanate in the presence of AlCl3 gives 5-(N-methylanilino)-1,2,4-dithiazol-3-one (2), 1-methyl-2-propylthio-4-quinazolinone (3) and N-methyl-N-phenyl-S-propylthiocarbamate (4a) in addition to 3-propylthio-4H-1,2,4-benzothiadiazine 1,1-dioxide (5). However, the same reaction conducted without AlCl3 gives 2, 4 a, and (Z)-N-methyl-N-phenyl-N'-chlorosulfonylcarbamimidoyl chloride (6). Compound (2) exhibited fungicidal and antibacterial activities.