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。
Synthesis of nitrogen-containing monoterpenoids with antibacterial activity
bacterial urease. Among the tested compounds, three active inhibitors were found - oxime 14 and lactams (-)-15 and 16 limited the activity of Sporosarcina pasteurii urease with Ki values of 174.3 µM, 43.0 µM and 4.6 µM, respectively. To our knowledge, derivative 16 is the most active antiureolytic lactam described to date.
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