Alkylation of 5-Substituted Tetrazoles with Various Alcohols in 1,2-Dichloroethane in the Presence of BF3·Et2O
作者:S. A. Egorov、M. A. Ishchenko、Ya. V. Prokopovich、V. I. Ivanova
DOI:10.1134/s107042802007012x
日期:2020.7
The alkylation of 1H-tetrazole, 5-methyl-1H-tetrazole, and 5-phenyl-1H-tetrazole with primary, secondary, and tertiary alcohols, including benzylic and allylic ones, have been studied in 1,2-dichloroethane in the presence of boron trifluoride-diethyl ether complex. Neither primary nor secondary saturated alcohols alkylated tetrazoles in the given system. Tertiary alcohols suchtert-butyl alcohol and adamantan-1-ol reacted with unsubstituted and 5-substituted tetrazoles to give 70-85% of the corresponding 2-alkyl-5-R-tetrazoles with high regioselectivity. The alkylation of 1H-tetrazole with benzyl alcohol afforded 55% of 2-benzyl-2H-tetrazole as the only product. The alkylation of 1H-tetrazole with various allylic alcohols led to the formation of mixtures of 2-alkyl-2H-tetrazoles with isomeric alkyl substituents.
Selective N(2) alkylation of tetrazole and 5-substituted tetrazoles by alcohols
作者:A. O. Koren'、P. N. Gaponik
DOI:10.1007/bf00473965
日期:1990.12
Gaponik; Voitekhovich; Maruda, Polish Journal of Chemistry, 1998, vol. 72, # 10, p. 2247 - 2253
作者:Gaponik、Voitekhovich、Maruda、Kulak、Ivashkevich
DOI:——
日期:——
Gaponik; Voitekhovich, Russian Journal of Organic Chemistry, 1998, vol. 34, # 5, p. 746 - 748
作者:Gaponik、Voitekhovich
DOI:——
日期:——
Selective N(2)-alkylation of tetrazoles by olefines