Journal of the Chemical Society. Perkin transactions I p. 2837 - 2844 (1996)
Update date:2022-08-03
Topics:
Kroutil, Wolfgang
Lasterra-Sanchez, M. Elena
Maddrell, Samuel J.
Mayon, Patrick
Morgan, Phillip
Roberts, Stanley M.
Thornton, Steven R.
Todd, Christine J.
Tueter, Melek
Polyleucine-based systems have been used to catalyse the asymmetric oxidation of a variety of alkyl enones 1-4, 9-14, an enynone 16 and a dienone 17 to afford the corresponding epoxides 5-8, 18-26 in good to excellent yield and optical purity. A range of enediones 30-32, 34 and one unsaturated keto ester 33 have also been epoxidised stereoselectively to afford optically active epoxides 35-39. The epoxidations were carried out with basic peroxide as the oxidant; the polyleucine catalyst was prepared from leucine N-carboxyanhydride using 1,3-diaminopropane, water (employing a humidity cabinet) or a polystyrene immobilised amine as the initiator. Preliminary mass spectral data on material derived from L-leucine and 1,3-diaminopropane (DAP-PLL) suggest that the catalyst consists of material that contains 22 ± 10 leucine residues.
View MoreQINGDAO NEW FLOURISH INTERNATIOANAL TRADE CO., LTD.
Contact:+86 532 80861829
Address:No. 1, Yinchuan East Road, 266061, Qingdao, China
website:http://www.arromax.com
Contact:+86-0512-62959601 skype:aimmezhang
Address:Suite 401, Bldg A3, 218 Xinghu St.Suzhou Industrial Park 215123, P.R. China
Shijiazhuang Yesheng Chemical Technology Co., Ltd
Contact:18031146013
Address:Hebei Xinji Xincheng
Hebei Fulong Import & Export Co., Ltd.
Contact:86-311-87795661
Address:15A19 Zhongyuan Building,368 Youyi North Street,Shijiazhuang 050070,China
Zhejiang Kangfeng Chemical Co.,LTD.
Contact:+86-579-86709687
Address:Xueshizhai Industrial Zone, Weishan Town,Dongyang City, Zhejiang Province ,China
Doi:10.1016/0021-9614(84)90138-1
(1984)Doi:10.1016/j.ejmech.2015.01.064
(2015)Doi:10.1016/0040-4039(96)00777-0
(1996)Doi:10.1021/om4010862
(2014)Doi:10.1021/jo01267a052
(1968)Doi:10.1039/c39930001226
(1993)
