24360-63-2Relevant academic research and scientific papers
Preparation and Diels-Alder Reactivity of Benzothieno- and Benzothienopyran-3-ones, Benzothiophene-2,3-quinodimethane Analogues; Synthesis of Dibenzothiophenes
Jackson, P. Mark,Moody, Christopher J.
, p. 681 - 687 (2007/10/02)
The benzothienopyran-3-ones (6) and the isomeric pyranones (7) are stable analogues of benzothiophene-2,3-quinodimethane (3).When heated with alkynes they undergo Diels-Alder reactions to give, after loss of carbon dioxide, dibenzothiophenes.The regiochemistry of the Diels-Alder reaction is discussed.
A SYNTHESIS OF BENZONAPHTHOTHIOPHENE DERIVATIVES via BENZOTHIOPHENE-2,3-QUINODIMETHANE INTERMEDIATES
Kano, Shinzo,Mochizuki, Naoki,Yuasa, Yoko,Hibino, Satoshi,Shibuya, Shiroshi
, p. 1033 - 1037 (2007/10/02)
2-Methyl- and 2-ethyl-3-(α-aryl)hydroxymethylbenzothiophene (6a)-(6d) were heated at 400 deg C for 5 min to yield the corresponding benzonaphthothiophene derivatives (9a)-(9d), respectively.In a similar fashion, the alcohol (8a) gave 5-methylbenzonaphthothiophene (9e) and 5,10-dimethyl derivative (3). 8-Methoxy-5-methyl- (9f) and 5-phenyl derivative (9g) were obtained from the corresponding alcohols (8b) and (8c), respectively.
The Synthesis of the Monomethyl Derivatives of Benzonaphthothiophene
Pratap, Ram,Tominaga, Yoshinori,Castle, Raymond N.,Lee, Milton L.
, p. 865 - 869 (2007/10/02)
The synthesis of all the monomethyl derivatives of benzonaphthothiophene is described.
