Reference of 23190-16-1, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.23190-16-1, Name is (1R,2S)-(?)-2-Amino-1,2-diphenylethanol, molecular formula is C6H5CH(NH2)CH(C6H5)OH. In a patent, introducing its new discovery.
Synthesis and structure of novel chiral oxazolinylferrocenes and oxazolinylferrocenylphosphines, and their rhodium(I) -complexes
A variety of chiral oxazolinylferrocenes are prepared from either ferrocenecarboxylic acid or cyanoferrocene and chiral beta-amino alcohols. Highly diastereoselective ortho-lithiation (84 ? 99% de) of the oxazolinylferrocenes is accomplished with sec-butyllithium and the treatment of the lithiated compounds with an electrophile such as MeI, Ph2PCI or (PhSe)2 gives the corresponding ortho-substituted oxazolinylferrocenes. The molecular structure of (S,S)-[2-(4?-isopropyloxazolin-2?-yl)ferrocenyl]diphenylphosphine (10), (S,S)-2-phenylseleno-1-(4?-isopropyloxazolinyl)ferrocene (17), (S,R)-3-methyl-1-diphenylphosphino-2-(4?-isopropyloxazolinyl)ferrocene (18), and (S,S,S)-[2-(4?,5?-diphenyloxazolin-2?-yl)ferrocenyl]diphenylphosphine ((S,S,S)-DIPOF; 21) has been fully characterized by X-ray crystallography. In connection with their usefulness as chiral ligands for Rh(I)-catalyzed asymmetric hydrosilylation of ketones, the square planar transition metal complexes having oxazolinylferrocenylphosphines, such as [Rh(COD)(P-N)]BF4 and Rh(CO)(P-N)Cl (P-N = 10 or 21), are prepared by treatment of [Rh(COD)2]BF4 and [Rh(CO)2Cl]2 with 10 and 21, respectively, and all structures have been characterized spectroscopically and further confirmed by X-ray crystallography.
If you are interested in 23190-16-1, you can contact me at any time and look forward to more communication.Reference of 23190-16-1
Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare