Journal of the Chemical Society. Perkin transactions I p. 2650 - 2655 (1981)
Update date:2022-08-10
Topics:
Fujitsu, Hiroshi
Matsumura, Eiichi
Takeshita, Kenjiro
Mochida, Isao
The catalytic hydrogenation of several ketones with cationic rhodium complexes has been investigated at 30 deg C with hydrogen at atmospheric pressure.The rate of the reaction depended very much on the structure of both the ketone and phosphine ligand, with triethylphosphine giving the highest activity among the ligands used.An electron-withdrawing substituent in the ketone was found to increase its reactivity among both alkyl and aryl ketones; the rates of reaction of the former ketones were generally faster.Benzyl methyl ketone showed a very high reactivity among aryl ketones, suggesting that the phenyl group may be in a position to interact with the rhodium atom to enhance the reactivity.Unsaturated ketones are hydrogenated catalytically to yield saturated ketones first, which are further hydrogenated to corresponding saturated alcohols.No trace of unsaturated alcohol was observed in this hydrogenation, even when the hydrogenation rate of the olefinic bond in the unsaturated ketone was much smaller than that of the carbonyl group of the corresponding saturated ketone in the consecutive hydrogenation.The reactivities of ketones are discussed in connection with their co-ordination and the hydrogenation mechanisms.
View MoreShanghai Sunwise Chemical Co., Ltd
website:http://www.sunwisechem.com
Contact:86-021-33883180
Address:Room 10E, Building G, Westlink Center, No. 2337 Gudai Road, Minhang District, Shanghai, China PC: 201100
Xiamen Hisunny Chemical Co.,Ltd
website:http://www.hisunnychem.com
Contact:+86-592-3327115
Address:Unit 603,No.879,Xiahe Road,Meixin Building,Xiamen,China
Contact:+852 83038667
Address:Room 1502, 15th Floor, SPA Centre,53-55 Lockhart Road, Wanchai, Hong Kong
Shijiazhuang Haitian Amino Acid Co., Ltd.
Contact:+86-311-88908111
Address:Shijiazhuang Hebei province,China
Zibo Kunran Enterprises Co. LTD
website:http://www.kunranchem.com
Contact:0086 533 5200669
Address:No. 96 Jinjing Avenue, Zibo, Shandong, China
Doi:10.1055/s-2001-17532
(2001)Doi:10.1007/BF00926429
()Doi:10.1021/np200788u
(2012)Doi:10.1016/S0022-328X(00)83618-9
(1970)Doi:10.1007/BF00953126
(1983)Doi:10.1002/ejoc.202000026
(2020)
