Related Products of 21436-03-3, 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.21436-03-3, Name is (1S,2S)-Cyclohexane-1,2-diamine, molecular formula is C6H14N2. In a patent, introducing its new discovery.
Development of recyclable chiral macrocyclic metal complexes for asymmetric aminolysis of epoxides: Application for the synthesis of an enantiopure oxazolidine ring
New recyclable chiral salen complexes Cr(iii)1-7 were synthesized from various macrocyclic chiral ligands having multistereogenic chiral centers which work synergistically to give the best results in terms of the enantioselectivity and yield of the products. Among the synthesized complexes, the Cr(iii)-4 salen complex efficiently catalyzed the ring opening reaction of various aromatic ester epoxides, trans-epoxides and meso-epoxides with anilines to furnish the corresponding beta-amino-alpha-hydroxyl esters and beta-amino alcohols with an excellent ee of up to 99% and a high yield of up to 95%. Furthermore, the chirally pure beta-amino-alpha-hydroxyl esters were converted into pharmaceutically important oxazolidine ring systems. Moreover, the chromium catalyst was recycled up to 5 cycles with the retention of its activity.
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Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare