Novel oxidative nitrogen to carbon rearrangement found in the conversion of anilines to benzaldoximes by treating with HCHO/H2O2
作者:Naval Kapuriya、Kalpana Kapuriya、Narsinh M. Dodia、Yi-Wen Lin、Rajesh Kakadiya、Chao-Ting Wu、Ching-Huang Chen、Yogesh Naliapara、Tsann-Long Su
DOI:10.1016/j.tetlet.2008.03.033
日期:2008.4
Novelrearrangement was found by reacting anilines with HCHO/H2O2 resulting in the synthesis of various benzaldoximes. The mechanism of the rearrangement is proposed and suggested that the rearrangement might proceed via unstable N-phenyloxazirane intermediate followed by the transfer of aryl moiety from nitrogen to carbon atom leading to the formation of benzaldoxime.
通过使苯胺与HCHO / H 2 O 2反应,发现了新颖的重排反应,从而合成了各种苯甲醛肟。提出了重排的机理,并提出重排可能通过不稳定的N-苯基恶嗪烷中间体进行,然后芳基部分从氮转移到碳原子,从而导致苯甲醛肟的形成。
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。
ISOXAZOLE-PYRIDINE DERIVATIVES
申请人:Buettelmann Bernd
公开号:US20090143371A1
公开(公告)日:2009-06-04
The present invention is concerned with isoxazole-pyridine derivatives of formula I
wherein X, R
1
to R
6
are as described herein. The compounds are active on the GABA A α5 receptor binding site and useful for the treatment of cognitive disorders, such as Alzheimer's disease.
本发明涉及式I的异恶唑-吡啶衍生物
其中X,R1至R6如本文所述。这些化合物对GABA A α5受体结合位点具有活性,并可用于治疗认知障碍,如阿尔茨海默病。
Novel C18 modified retrosteroids as progesterone receptor modulator compounds
申请人:Messinger Joseph
公开号:US20070082876A1
公开(公告)日:2007-04-12
Retrosteroidal compounds of formula I which act as progesterone receptor modulators, a method for their production, and pharmaceutical preparations containing these compounds. These compounds are preferably used for the treatment of benign gynecological disorders such as endometriosis and uterine fibroids, as well as for female birth control and for hormone replacement therapy (HRT).