469874-36-0Relevant academic research and scientific papers
Silica gel-immobilised chiral 1,2-benzenedisulfonimide: a Br?nsted acid heterogeneous catalyst for enantioselective multicomponent Passerini reaction
Antenucci, Achille,Dughera, Stefano,Marra, Francesco
, p. 26083 - 26092 (2021)
A chiral heterogeneous catalyst derivative of (?)-4,5-dimethyl-3,6-bis(1-naphthyl)-1,2-benzenedisulfonimide is proven here to be efficient in a three-component asymmetric Passerini protocol, carried out in a deep eutectic solvent. Reaction conditions are mild and green, while enantioselectivity is excellent. The catalyst was easily recovered and reused with no decrease in its catalytic activity.
Synthesis of chiral non-racemic 1,2-diamines from O-acetyl mandelic acid: Application in enantioselective deprotonation of epoxides and diethylzinc addition to aldehydes
Saravanan,Bisai, Alakesh,Baktharaman,Chandrasekhar,Singh, Vinod K
, p. 4693 - 4706 (2007/10/03)
A variety of 1,2-diamines were synthesized from readily available O-acetyl mandelic acid. These diamines were used in the synthesis of key intermediates for the preparation of (-)-utenone A and carbovir involving enantioselective deprotonation of epoxides. The addition of Et2Zn catalysed by some of these diamines was also studied and although ees were not high, some interesting observations were made in the outcome of the stereochemistry of the product.
