85166-92-3Relevant academic research and scientific papers
New chiral catalysts for phospho-transfer
Ward,Jiang,Kee
, p. 6181 - 6184 (2000)
Chiral salcyan complexes of aluminium are effective air and water tolerant enantioselective catalysts for the hydrophosphonylation of carbonyls. Complexes of the form [(R,R)-salcyan]A1X (X = OH, OR) result in product enantioselectivity changes (Aee) of ca
Whole-cell biotransformation of diethyl 1-hydroxy-1-phenylmethanephosphonate in a different reaction environment
Majewska, Paulina
, p. 418 - 421 (2017/04/03)
The whole-cell biocatalytic resolutions of enantiomers of racemic 1-butyryloxy-1-phenylmethane-phosphonate was performed by Bacillus subtilis strain in different media. For this purpose, the well-known medium, which induce lipolytic properties, was tested
1,1′-Dibenzyl-bis-(triazolyl)diphenylphosphine dioxide: A new efficient organocatalyst for silicon tetrachloride-mediated enantioselective Abramov-type phosphonylation of aldehydes with trialkyl phosphites
Sevrain, Nicolas,Volle, Jean-No?l,Pirat, Jean-Luc,Ayad, Tahar,Virieux, David
, p. 52101 - 52104 (2017/11/22)
Asymmetric phosphonylation of aldehydes with trialkyl phosphites using a combination of SiCl4 and a novel 1,1′-dibenzyl-bis-(triazolyl)diphenylphosphine dioxide organocatalyst has been developed. This protocol provides the corresponding α-hydroxyphosphonates with a broad range of functional groups and substitution patterns in excellent yields and good selectivities.
Manganese-proline derived new catalyst system for the enantioselective synthesis of α-hydroxyphosphonates and α-aminophosphonates
Lim, Hyun,Datilus, Vicklyn,Teriak, Rania,Chohan, Prianka,Kaur, Parminder
supporting information, p. 1480 - 1483 (2017/03/23)
A novel manganese/proline-derived catalyst system is reported for the stereoselective synthesis of α-hydroxyphosphonates and α-aminophosphonates. The reaction proceeded smoothly under mild reaction conditions with efficient reaction times. The resulting p
Imidazolium ion tethered TsDPENs as efficient ligands for Iridium catalyzed asymmetric transfer hydrogenation of α-keto phosphonates in water
Sun, Mengxia,Campbell, Joann,Kang, Guowei,Wang, Huigang,Ni, Bukuo
, p. 12 - 14 (2016/03/22)
For the first time, an efficient method has been developed by the use of imidazolium ion tethered TsDPENs as efficient ligands for Iridium-catalyzed asymmetric transfer hydrogenation (ATH) of α-ketophosphonates in water. The reaction provided the desired
Asymmetric hydrogenation of α-keto phosphonates with chiral phosphine-phosphoramidite ligands
Li, Qing,Hou, Chuan-Jin,Liu, Yan-Jun,Yang, Rui-Feng,Hu, Xiang-Ping
, p. 617 - 622 (2015/08/03)
Rh-catalyzed asymmetric hydrogenation of challenging α-keto phosphonates has been developed. With a new chiral phosphine-phosphoramidite ligand, a wide range of α-keto phosphonates were hydrogenated to afford the corresponding (R)-α-hydroxy phosphonates w
The catalytic asymmetric abramov reaction
Guin, Joyram,Wang, Qinggang,Van Gemmeren, Manuel,List, Benjamin
supporting information, p. 355 - 358 (2015/04/27)
The first catalytic enantioselective Abramov reaction is described. The process is based on the utilization of a chiral disulfonimide catalyst, which efficiently avoids the difficulties encountered with metal-based catalysts. Several functionalized a-hydroxy phosphonates were synthesized in good yields and with excellent enantiomeric ratios of up to > 99:1. The process was shown to be scalable and up to 1 g of starting material could be employed under mild reaction conditions.
Fe(III) catalyzed enantioselective hydrophosphonylation of aldehydes promoted by chiral camphor Schiff bases
Xu, Feng,Liu, Yanpeng,Tu, Jingxuan,Lei, Chao,Li, Gaoqiang
, p. 891 - 896 (2015/09/01)
Abstract Five novel chiral camphor Schiff bases were designed. Schiff base L3 showed high efficiency in Fe(III)-catalyzed asymmetric hydrophosphonylations of aldehydes, giving the corresponding products in high yields (up to 91%) along with mod
Bis(oxazoline)-copper catalyzed enantioselective hydrophosphonylation of aldehydes
Deng, Tao,Cai, Chun
, p. 27853 - 27856 (2014/07/21)
A highly enantioselective copper-catalyzed hydrophosphonylation of aldehydes in the presence of bis(oxazoline) ligand is presented. The reaction proceeded smoothly under mild conditions. The resulting α- hydroxyphosphonates were obtained with high yields
New phosphine oxide aziridinyl phosphonates as chiral Lewis bases for the Abramov-type phosphonylation of aldehydes
Dogan, Oezdemir,Isci, Muhammet,Aygun, Muhittin
, p. 562 - 567 (2013/06/27)
A series of Lewis bases were screened for Abramov-type phosphine additions to aldehydes. A novel phosphine oxide aziridinyl phosphonate POAP-A was found to be better than the others in forming the product in 96% yield and with 42% ee. The absolute configu
