Stereoselective synthesis and rearrangement-fragmentation of arylidene N-alkoxydiketopiperazines
β Scribed by Liu, Shouxin; Mu, Yun; Han, Jianrong; Zhen, Xiaoli; Yang, Yihua; Tian, Xia; Whiting, Andrew
- Book ID
- 118201904
- Publisher
- Royal Society of Chemistry
- Year
- 2011
- Tongue
- English
- Weight
- 249 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1477-0520
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The electron impact mass spectra of several gem-bisamides are studied. The dominant peaks in the spectra of alkylidene and arylidene bisalkylamides are formed by the cleavage of the C -N bond of the amido group with charge retention on the nitrogen atom. This fragmentation, followed by the loss of a
Thermolysis of N-phenylbenzamide oximes I, II and III (R = Cl, NO 2 and OCH 3 ) under nitrogen gives rise to benzimidazoles as the major products (45-52%), in addition to benzonitrile, arylamines, benzoic acid, phenols, benzanilides, 2-phenyl benzoxazoles and carbazoles. In the presence of naphthale