Direct Synthesis of Aryl Ketones by Palladium-Catalyzed Desulfinative Addition of Sodium Sulfinates to Nitriles
作者:Jing Liu、Xianya Zhou、Honghua Rao、Fuhong Xiao、Chao-Jun Li、Guo-Jun Deng
DOI:10.1002/chem.201101252
日期:2011.7.11
efficient method for the synthesis of various aryl ketones by palladium‐catalyzed desulfinative addition of aromatic sulfinic acid sodiumsalts to various nitriles is described (see scheme). Aromatic and aliphatic nitriles are successfully reacted with arenesulfinic acid sodiumsalts to form aryl ketones in good yields.
Practical one-pot preparation of ketones from aryl and alkyl bromides with aldehydes and DIH via Grignard reagents
作者:Souya Dohi、Katsuhiko Moriyama、Hideo Togo
DOI:10.1016/j.tet.2012.05.059
日期:2012.8
groups, such as ester, nitrile, ketone, and nitro groups with i-PrMgCl·LiCl or PhMgCl instead of Mg, also provided the corresponding diaryl and alkyl arylketones in good yields. The above methods are simple and practical transition-metal-free methods for the preparation of various diaryl ketones and alkyl arylketones bearing electron-rich aromatic groups and electron-deficient aromatic groups, as well
通过衍生自芳基或烷基溴化物的格利雅试剂的反应,然后与芳族或脂族醛的反应以及随后用1,3-二碘的处理,可以有效地以高收率高效地制备各种二芳基酮,烷基芳基酮和二烷基酮。一锅法中的-5,5-二甲基乙内酰脲和K 2 CO 3。相同的处理的芳族溴化物轴承吸电子基团,如酯,腈,酮和硝基与我-PrMgCl·LiCl或PhMgCl代替Mg,也以良好的收率提供了相应的二芳基和烷基芳基酮。以上方法是用于制备各种带有富电子芳族基团和缺电子芳族基团的二芳基酮和烷基芳基酮以及二烷基酮的简单且实用的无过渡金属的方法。
ASYMMETRIC HYDROGENATION METHOD FOR KETONE COMPOUND
申请人:Zhang Wanbin
公开号:US20130053574A1
公开(公告)日:2013-02-28
The invention relates to an asymmetric hydrogenation method for ketone compounds, comprising the step of: under hydrogen atmosphere, in the presence of an in situ catalyst derived from a chiral ligand and a ruthenium salt, adding a ketone compound and a base into a second solvent to carry out an asymmetric hydrogenation for the ketone compound. The invention can obtain a conversion of 100% and a highest asymmetric inducement effect of 99.7% for the ketone compound. The invention has the advantages including simple procedure, high conversion and selectivity, good atom economy and good prospect of industrial application.
characterized. Their catalytic activity in the acceptorless dehydrogenative coupling of alcohols and the transferhydrogenation of aldehydes with formic acid as a hydrogen source was investigated. This comparative study, examining homogeneous and polymer-tethered species, proved that carefully designing a link between the support and the catalytic moiety, which takes into consideration the mechanism underlying
Friedel-Crafts acylation of arenes with carboxylic acids using silica gel supported AlCl_3
作者:KAVEH PARVANAK
DOI:10.3906/kim-0912-359
日期:——
Aromatic compounds react smoothly with carboxylic acids in the presence of silica gel supported aluminium trichloride to afford the corresponding ketones with high regioselectivity in high to excellent yields. The catalyst is stable (as a bench top catalyst) and can be easily recovered and reused without appreciable change in its efficiency.