1127-35-1, Benzo[b]thiophene-3(2H)-one 1,1-Dioxide is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,1127-35-1
This compound wasprepared by a modified method: To a solution of benzo[b]thiophen-3(2H)-one-1,1-dioxide (1b) (1.24 g, 6.8 mmol)paraformaldehyde (0.10 g, 3.4 mmol) in ethanol (40 mL) a catalytic amount of piperidine and acetic acid was added. The resulting mixture was stirred at rtfor 72 h. After cooling a white precipitate was filtered off and crystallisedfrom ethanol giving 3b (0.89 g, 70%)as a white powder with mp 248-250C. 1H NMR (CDCl3, 400 MHz): 2.85 and 2.86* (two t, 3J=7.9 Hz, 2H), 4.63* and4.66 (two t, 3J=7.9 Hz,2H), 7.86 (dt, 3J=7.6, 4J=1.1Hz, 2H), 7.99 (tt, 3J=7.6,4J=1.1 Hz, 2H), 8.05 (dd, 3J=7.6, 4J=1.1 Hz, 2H), 8.07 (dd, 3J=7.6, 4J=1.1Hz, 2H). 13C NMR(CDCl3, 100.56 MHz): 22.7 and 22.8*, 60.7 and 61.2*, 121.9* and122.0, 125.1, 131.9, 134.4, 137.4 and 137.5*, 145.9* and 146.0, 189.1 and189.5*. Anal.Calcd for C17H12O6S2: C, 54.25; H,3.21. Found: C, 54.19; H, 3.42. Physical-chemical data was in accordance tothat described in the literature.
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Reference£º
Article; Cekavicus, Brigita; Vigante, Brigita; Rucins, Martins; Plotniece, Aiva; Pajuste, Karlis; Petrova, Marina; Belyakov, Sergey; Duburs, Gunars; Sobolev, Arkadij; Tetrahedron Letters; vol. 55; 33; (2014); p. 4601 – 4604;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem