Mishra, Ashish A.; Bhanage, Bhalchandra M. published the artcile< Ru-Tethered (R,R)-TsDPEN with DMAB as an efficient catalytic system for high enantioselective one-pot synthesis of chiral β-aminol via asymmetric transfer hydrogenation>, Related Products of 1192620-83-9, the main research area is alpha substituted beta aminol enantioselective preparation; aniline alpha bromo ketone asym transfer hydrogenation ruthenium catalyst.
This work reflected Ru-tethered-TsDPEN as an active chiral catalyst for one pot selective synthesis of optically active α-substituted alcs. ArCH(OH)CH2NHAr1 [Ar = Ph, 2-FC6H4, 2,3-(MeO)2C6H3, etc.; Ar1 = Ph, 4-MeC6H4, 4-ClC6H4, 4-Cl-2-I-C6H3, etc.; stereo = S] and its derivatives from α-bromo ketones ArCOCH2Br in presence of dimethylamine borane (DMAB) as hydrogen source. Various Ru-chiral catalysts were screened and methodol. proceeded via a (R,R) Ru-tethered TsDPEN catalyst through asym. transfer hydrogenation (ATH) of in-situ formed ketones to corresponding chiral β-aminol product. Thus, Ru-tethered TsDPEN-DMAB catalytic system works efficiently with higher yield and high enantiomeric excess over others for ATH process. Based on a study of ortho, meta and para substituted α-bromo acetophenone derivatives, effective enantioselectivity was observed for ortho substituted β-aminol. The mechanism was optimized depending on product anal. with help of its kinetic AT-IR study. This work also focused on synthesis of various β-amino alc. derivatives where effect of an EWG and EDG on enantio-selectivity was studied.
New Journal of Chemistry published new progress about Amino alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1192620-83-9 belongs to class amides-buliding-blocks, and the molecular formula is C30H31ClN2O2RuS, Related Products of 1192620-83-9.
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics