Reaction with alcohols of 1-bromo(chloro)-1,2-epoxyheptafluorobutanes and 1,2-epoxyperfluorobutane. Preparation of α-bromo-, α-chloro-, and α-alkoxyhexafluorobutyric acids esters
摘要:
1-Bromo(chloro)-1,2-epoxyheptafluorobutanes reacted with primary and secondary alcohols by two concurrent routes giving a mixture of esters of alpha-alkoxy- and alpha-bromo(chloro)-hexafluorobutyric acids with growing content of the latter on increasing the bulk of the nucleophilic agent. 1,2-Epoxyperfluorobutane under the same conditions was converted into alpha-alkoxyhexafluorobutyric acid esters. Reaction of 1-bromo- 1,2-epoxyheptafluorobutane and 1,2-epoxyperfluorobutane with potassium tert-butylate in tert-butanol resulted in tert-butyl alpha-bromohexafluorobutyrate and heptafluorobutyrate respectively due to the forced attack of the bulky nucleophile on the terminal carbon atom of the epoxy ring.
Zapevalov, A. Ya.; Filyakova, T. I.; Peschanskii, N. V., Journal of Organic Chemistry USSR (English Translation), 1989, vol. 25, # 3.1, p. 441 - 445
作者:Zapevalov, A. Ya.、Filyakova, T. I.、Peschanskii, N. V.、Kodess, M. I.、Kolenko, I. P.
DOI:——
日期:——
ZAPEVALOV, A. YA.;FILYAKOVA, T. I.;NESCHANSKIJ, N. V.;KODESS, M. P.;KOLEN+, ZH. ORGAN. XIMII, 25,(1989) N, S. 492-497
作者:ZAPEVALOV, A. YA.、FILYAKOVA, T. I.、NESCHANSKIJ, N. V.、KODESS, M. P.、KOLEN+
DOI:——
日期:——
Reaction with alcohols of 1-bromo(chloro)-1,2-epoxyheptafluorobutanes and 1,2-epoxyperfluorobutane. Preparation of α-bromo-, α-chloro-, and α-alkoxyhexafluorobutyric acids esters
作者:T. I. Filyakova、A. Ya. Zapevalov、M. I. Kodess、V. I. Saloutin
DOI:10.1134/s1070428006110157
日期:2006.11
1-Bromo(chloro)-1,2-epoxyheptafluorobutanes reacted with primary and secondary alcohols by two concurrent routes giving a mixture of esters of alpha-alkoxy- and alpha-bromo(chloro)-hexafluorobutyric acids with growing content of the latter on increasing the bulk of the nucleophilic agent. 1,2-Epoxyperfluorobutane under the same conditions was converted into alpha-alkoxyhexafluorobutyric acid esters. Reaction of 1-bromo- 1,2-epoxyheptafluorobutane and 1,2-epoxyperfluorobutane with potassium tert-butylate in tert-butanol resulted in tert-butyl alpha-bromohexafluorobutyrate and heptafluorobutyrate respectively due to the forced attack of the bulky nucleophile on the terminal carbon atom of the epoxy ring.