Hueckel, Justus Liebigs Annalen der Chemie, 1927, vol. 451, p. 129,130
作者:Hueckel
DOI:——
日期:——
An environment-friendly Beckmann rearrangement: the diazotisation of ketoxime carbamates
作者:R Anilkumar、Sosale Chandrasekhar
DOI:10.1016/s0040-4039(00)01243-0
日期:2000.9
The titled reaction was effected with iso-amyl nitrite or sodium nitrite, both in cone. H2SO4 at 0-25 degrees C in excellent yields (55-98%). Apart from the mild temperatures employed, organic solvents and reagents can be avoided, and the by-products are CO2 and N-2, so the conditions are environment-friendly. (C) 2000 Elsevier Science Ltd. All rights reserved.
Hueckel, Justus Liebigs Annalen der Chemie, 1925, vol. 441, p. 1
作者:Hueckel
DOI:——
日期:——
Improved procedures for the Beckmann rearrangement: the reaction of ketoxime carbonates with boron trifluoride etherate
作者:R Anilkumar、Sosale Chandrasekhar
DOI:10.1016/s0040-4039(00)00875-3
日期:2000.7
A variety of ketoxime ethyl carbonates—easily prepared from the oximes and ethyl chloroformate—undergo the Beckmann rearrangement upon treatment with 1 equivalent of borontrifluorideetherate, in dichloromethane solution at room temperature in excellent yields (generally 75–99%).