Monatshefte fur Chemie p. 367 - 378 (1988)
Update date:2022-07-30
Topics:
Terpetschnig, Ewald
Ott, Walter
Kollenz, Gert
Peters, Karl
Peters, Eva-Maria
Schnering, Hans Georg von
4-Benzoyl-5-phenylthiophene-2,3-dione (1) reacts with o-phenylendiamine to give the quinoxaline derivative 2 which cyclizes either to the furo<2,3-b>quinoxaline 4 or to the thieno<2,3-b>quinoxaline 5 depending on the reaction conditions.On the other hand,
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