Dipolar addition reactions of nitrile oxides. VII. A new general method of synthesis of 3,5-disubstituted 1,2,4-oxadiazoles.
β Scribed by P. Rajagopalan
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 127 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
We would like to report that aliphatic and aromatic nitrile oxides (I), as exemplified by pivalonitrile oxide and I-chlorobenzonitrile oxide respectively, react with methyl imidates (II) at room temperature (in absolute ether) to yield 1.2,4-oxadiazoles of the type III (See Table ).
π SIMILAR VOLUMES
## Abstract Several new 2,5βdisubstituted 1,3,4βoxadiazoles have been synthesized in good yields by reaction of aromatic acids with hydrazine dihydrochloride in a mixture of orthophosphoric acid, phosphorus pentoxide and, in general, with addition of phosphorus oxychloride to the reaction mixture.
## Abstract magnified image Disubstituted 1,2,4βoxadiazoles have been synthesized in good yields and good purity in one pot procedure by reaction of aromatic nitriles, hydroxylamine hydrochloride and sodium carbonate in ethylene glycol under heating at 195Β°C. The structures of different 1,2,4βoxad