Mesoionische 2-methylen-1.3.4-oxadiazole und -thiadiazole
β Scribed by Rudolf Grashey; Margit Baumann; Rainer Hamprecht
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 108 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
The thioketene carboxylates 6, generated in situ from 2,4-dimethylene-l,3-dithietanes 1, undergo cyclocondensation with aminocrotonic acid derivatives 5 to give the 4-mercaptopyridines 4, whereas with the esters 7 of glycine and thioglycolic acid the alkylidenethiazolidine and alkylidene-l,3-dithiol
Whrend mesoionische 1.3.4~Thiadiazol-2-thione f seit der erstmafigen Raretellung durch H. Busch 31 das Interesse einer Reihe von Arbeftskreiseo gefunden haben 4', blieben die entsprechenden 1.3.4-Thiadiazolone 2 bis in j-gste Zeit unbekannt. Zwei kurae Hitteilungen von A.Y. LXZARIS sowie K.T. POTPS
The title compound, C~12~H~9~N~5~O~3~S~2~, was synthesized __via__ condensation of 1,2,4-oxadiazole chloromethane with 1,3,4-thiadiazolethiol. The benzene and oxadiazole rings are almost coplanar, making a twist angle of only 4.6β (3)Β°, but the thiadiazole ring deviates from the molecular plane, maki