725712-44-7Relevant articles and documents
Synthesis of heterocycles from the products of anionic arylation of unsaturated compounds. 7*. Products of haloarylation of acrylic acid and its esters in the synthesis of benzo[b]thiophene derivatives
Obushak,Matiichuk,Martyak
, p. 878 - 884 (2007/10/03)
3-Chloro-2-chlorocarbonylbenzo[b]thiophenes were obtained on oxidation of Meerwein reaction products, viz. 3-aryl-2-halopropionic acids and their esters, with thionyl chloride in the presence of N-benzyl-N-methylmorpholinium chloride. Disubstituted thioureas were synthesized by the reaction of these compounds with ammonium thiocyanate and aromatic amines, and were cyclized by interaction with iodoacetic acid with the formation of 4-thiazolidinone derivatives. The same cyclization in the presence of aromatic aldehydes leads to the formation of the corresponding 5-arylidene-substituted 4-thiazolidinones.