Vinyltetrazoles: I. Synthesis of NH-unsubstituted 5-vinyltetrazole
摘要:
The NH-unsubstituted 5-vinyltetrazole was obtained in 55% yield by exhaustive methylation of 5-(beta-dimethylaminoethyl)tetrazole with dimethyl sulfate at the terminal dimethylamino group with the subsequent elimination of a proton from the alpha-CH2 group and Hofmann beta-cleavage of the intermediate 5-(beta-trimethylammoniumethyl)tetrazolide methyl sulfate. The microwave irradiation was shown to reduce 5-fold the time of the synthesis of the initial substrate, 5-(beta-dimethylaminoethyl)tetrazole.
Too Short-Lived or Not Existing Species:<i>N</i>-Azidoamines Reinvestigated
作者:Klaus Banert、Tom Pester
DOI:10.1021/acs.joc.9b00034
日期:2019.4.5
Treatment of N-chlorodimethylamine with sodium azide in dichloromethane does not lead to N-azidodimethylamine, as thought for more than 50 years. Instead, surprisingly, (azidomethyl)dimethylamine is generated with good reproducibility. A plausible reaction mechanism to explain the formation of this product is presented. The reaction of lithium dibenzylhydrazide with tosyl azide does not result in the
Vinyltetrazoles: I. Synthesis of NH-unsubstituted 5-vinyltetrazole
作者:V. A. Ostrovskii、P. A. Aleshunin、V. Yu. Zubarev、E. A. Popova、Yu. N. Pavlyukova、E. A. Shumilova、R. E. Trifonov、T. V. Artamonova
DOI:10.1134/s1070428010110126
日期:2010.11
The NH-unsubstituted 5-vinyltetrazole was obtained in 55% yield by exhaustive methylation of 5-(beta-dimethylaminoethyl)tetrazole with dimethyl sulfate at the terminal dimethylamino group with the subsequent elimination of a proton from the alpha-CH2 group and Hofmann beta-cleavage of the intermediate 5-(beta-trimethylammoniumethyl)tetrazolide methyl sulfate. The microwave irradiation was shown to reduce 5-fold the time of the synthesis of the initial substrate, 5-(beta-dimethylaminoethyl)tetrazole.
Tetrazoles. 21. Reaction of benzonitrile with salts of hydrazoic acid
作者:I. E. Titova、V. S. Poplavskii、G. I. Koldobskii、V. A. Ostrovskii、V. D. Nikolaev、G. B. Erusalimskii