Golden solution: A neutral solution of AuBr3, containing [AuBr2(OH)2]− in equilibrium with [AuBr3(OH)]− and [AuBr4]−, promotes the chemoselective hydrolysis of robust oximes into carbonyl compounds without racemization (see scheme). The food additive diacetyl acts as a NH2OH‐trapping agent, thus avoiding the formation of gold nanoparticles and allows the reaction to run catalytically.
Abstract In newly initiated cellsuspension cultures of Nicotianatabacum , (4 R )-(−) and (4 S )(+)-carvoximes and (1 S ,4 R )(+)-dihydrocarvoxime were hydrolysed to the corresponding ketones and then the resultant ketones were reduced to the corresponding alcohols.
摘要 在烟草新开始的细胞悬浮培养中,(4 R )-(-) 和(4 S )(+)-香芹酮肟和(1 S ,4 R )(+)-二氢香芹酮肟被水解成相应的酮,然后生成的酮被还原为相应的醇。
A new and concise way to enamides by fluoroalkanosulfonyl fluoride mediated Beckmann rearrangement of α,β-unsaturated ketoximes
作者:Zhaohua Yan、Yun Xu、Weisheng Tian
DOI:10.1016/j.tetlet.2014.10.154
日期:2014.12
The reaction of α,β-unsaturated ketoximes with fluoroalkanosulfonyl fluorides in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) underwent the Beckmannrearrangement smoothly to afford the corresponding acid-sensitive enamides in moderate to excellent yields, which provides a new efficient method for the preparation of acid-sensitive enamides.
Synthesis and study of the structure of new N-substituted 2-methyl-5-(1-methylethyl) cyclohexylamines
作者:I. I. Bardyshev、N. G. Kozlov、T. K. Vyalimyaé、T. I. Pekhk
DOI:10.1007/bf00568377
日期:1980.7
(+)-S-carvone with aliphatic nitriles and the hydroamination of some aldehydes and ketones with (+)-S-carvone oxime have been developed. The optimum conditions for performing these processes has been selected. It has been established by13C NMR that the reactions studied form a mixture of N-substituted carvo-, isocarvo-, neocarvo-, and neoisocarvomenthylamines in a ratio of 65:20:10:5. As a result of
Reaction of certain α,β-unsaturated terpenic oximes with sodium nitrite in acetic acid: A facile synthesis of allylic nitro compounds
作者:Alexey V. Tkachev、Andrey M. Chibiryaev、Alexey Yu. Denisov、Yuri V. Gatilov
DOI:10.1016/0040-4020(94)01057-7
日期:1995.2
Reaction of nitrous acid with α,β-unsaturated oximes having the structural fragment of 2-methyl-3-hydroxyimino-1-cyclohexene is described. A set of the oximes studied includes simple monocyclic derivatives (2-methyl-2-cyclohexenone oxime and carvone oxime) as well as more complex bicyclic compounds (car-2-en-4-one oxime and a-muurolen-3-one oxime). The reaction was shown to give allylic nitro compounds
描述了亚硝酸与具有2-甲基-3-羟基亚氨基-1-环己烯的结构片段的α,β-不饱和肟的反应。研究的一组肟包括简单的单环衍生物(2-甲基-2-环己烯酮肟和香芹酮肟)以及更复杂的双环化合物(car-2-en-4-one肟和α-muurolen-3-one肟) )。已显示该反应产生了具有碳骨架保留或具有重排骨架的烯丙基硝基化合物。所得产物的化学结构和立体化学通过1 H,13 C和14 N NMR光谱以及IR和UV数据确定。讨论了反应的可能机理。分子力学和MNDO计算用于机理研究。