Selective Synthesis of <i>E</i> and <i>Z</i> Isomers of Oximes
作者:Hashem Sharghi、Mona Hosseini Sarvari
DOI:10.1055/s-2001-9719
日期:——
The highly stereoselective conversion of aldehydes and ketones to their corresponding oximes with hydroxylamin hydrochloride are catalyzed by CuSO4 and K2CO3. This method occurs under mild reaction conditions with high yields.
Solvent-Free and One-Step Beckmann Rearrangement of Ketones and Aldehydes by Zinc Oxide
作者:Hashem Sharghi、Mona Hosseini
DOI:10.1055/s-2002-31964
日期:——
In the presence of zinc oxide and without any additional organic solvents, Beckmann rearrangement of several ketones and aldehydes were performed in good yields.
在氧化锌存在下,且无需任何额外的有机溶剂,数种酮和醛的贝克曼重排反应均以良好产率进行。
P<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub> as an Efficient Reagent for the Preparation of <b> <i>Z</i> </b>-Aldoximes Under Solvent-Free Conditions
作者:Hossein Eshghi、Zinat Gordi
DOI:10.1080/10426500590924148
日期:2005.7.1
Abstract A facile and efficient method for the preparation of Z-aldoximes is improved by means of P2O5/SiO2 reagent in solvent-free media. Advantages of this method are the use of inexpensive and selectivereagent, with high yields in simple operation, and short reaction time undersolvent-freeconditions.
A Facile Steroselective Synthesis of Z-Aldoximes from Benzaldehyde and Hydroxlaminehydrochloride in Dry Media
作者:SHARWAN K. DEWAN、MEENAKSHI MEENAKSHI
DOI:10.13005/ojc/280360
日期:2012.9.18
The synthesis of Z-arylaldoximes has been carried out under microwave conditions using CdSO4 as catalyst. The yields obtained were in the range 84-88%.
Z-芳基醛肟的合成是在微波条件下使用CdSO4作为催化剂进行的。获得的产率在84-88%的范围内。
Process for producing nitriles
申请人:Sumitomo Chemical Company, Limited
公开号:US04456562A1
公开(公告)日:1984-06-26
In a process for producing a nitrile compound from a corresponding aldehyde exhibited by the general formula (I) and a hydroxylamine inorganic acid salt R.sup.1 CHO (I) or from an aldoxime exhibited by the general formula (II), R.sup.2 CH.dbd.NOH (II) (in the general formulas shown hereinabove, R.sup.1 represents an aryl group having 6 to 9 carbon atoms and R.sup.2 represents an alkyl or alkenyl group having 1 to 9 carbon atoms or an aryl group having 6 to 9 carbon atoms), a process, wherein water produced in the reaction is azeotropically distilled out of the reaction system with the aid of a solvent which makes an azeotropic mixture with water. The nitrile compound is useful as an important intermediate for the synthesis of pharmaceuticals or pesticides.