Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 102029-44-7, Name is (R)-4-Benzyl-2-oxazolidinone, molecular formula is C10H11NO2, 102029-44-7, In a Article, authors is Ogawa, Yasuyuki£¬once mentioned of 102029-44-7
Highly stereoselective samarium(II) iodide-mediated aldol reactions of acylaziridines with aldehydes
The samarium(II) iodide-mediated stereoselective aldol reactions of acylaziridines with aldehydes are described. beta-Amino-beta?-hydroxy ketones were synthesized in high yields by the aldol reaction of aldehydes with samarium enolates generated by aziridine-fragmentation of aziridinyl ketones with two moles of samarium(II) iodide. By the choice of an appropriate nitrogen protecting group, depending on the substituent at C-3 position of aziridinyl ketone, anti,anti-beta-amino-beta?-hydroxy ketones were diastereoselectively obtained among the four possible diastereomers. Further, enantiomerically pure anti,anti-beta-amino-beta?-hydroxy ketones were successfully obtained by this aldol reaction when chiral aziridinyl ketones were used. In addition, delta-amino-?-hydroxy-beta,gamma-unsaturated esters were also synthesized in high yields by the aldol reaction of aldehydes with samarium enolates generated by aziridine-fragmentation and olefin-migration of gamma,delta-aziridinyl-alpha,beta-unsaturated esters using two moles of samarium(II) iodide. This aldol reaction proceeded with complete alpha-regioselectivity and formed (E)-olefin selectively. By introducing chiral oxazolidin-2-one auxiliary to gamma,delta-aziridinyl-alpha,beta- unsaturated carbonyl system, this reaction was extended successfully to the asymmetric reaction and enantiomerically pure syn-delta-amino-beta?- hydroxy-beta,gamma-unsaturated esters were obtained in high yields.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.102029-44-7. In my other articles, you can also check out more blogs about 102029-44-7
Reference£º
Oxazolidine – Wikipedia,
Oxazolidine | C3H1959NO – PubChem