It is an active pharmaceutical intermediate. Condensation of amino carboxyalkyl derivative of 4,5,6,7-tetrahydrobenzo[b]thiophene with salicylaldehyde yielded a potentially tridentate Schiff base (HSAT), which formed a series of copper(II) complexes. Reaction of ethyl 2-diazo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 1 with 3-iminobutyronitrile 2 gave the hydrazone derivative.
V. Alagarsamy.;S. Meena.; K.V. Ramseshu.; V.R. Solomon.; K. Thirumurugan.; K. Dhanabal.; M. Murugan. Synthesis, analgesic, anti-inflammatory, ulcerogenic index and antibacterial activities of novel 2-methylthio-3-substituted-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-4(3H)-ones. Eur. J. Med. Chem. 2006, 41 (11),1293-1300.
Rafat M. Mohareb,; Fatma M. Manhi. Reaction of ethyl 2-diazo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate with 3-iminobutyronitrile: synthesis of pyridazines, thiophenes, and their fused derivatives. Heteroatom Chemistry. 2000, 11 (6), 403-412,.
Gefahrenhinweise (EU): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear protective gloves. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.