Journal fur Praktische Chemie - Chemiker-Zeitung p. 176 - 180 (1993)
Update date:2022-08-02
Topics:
Hartenstein, H.
Blitzke, T.
Sicker, D.
Wilde, H.
Reactions of dimethyl 3-bromo-2-oxoglutarate 2 with binucleophiles to form heterocycles proceed on two different pathways depending on the type of reactant.Thus, strong S-nucleophiles like thioureas and thiocarbohydrazide substitute initially the bromine atom and form 2-aminothiazoles 3 - 7 and the 1,3,4-thiadiazine 8.However, o-phenylendiamines reacted to form the brominated quinoxaline-2(1H)-one derivatives 9 and 10, resp.
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