130796-31-5Relevant academic research and scientific papers
Influence of A1,3 Strain on the Stereochemical Outcome of Acid-Mediated Amido Cyclization in the Synthesis of 2-(4-Methoxyphenyl)-3,4-(dihydroxy)piperidines
Ramakrishna, Katakam,Jagadeesh, Yerri,Ramakrishna,Rao, Joshi Laxmikanth,Rao, Batchu Venkateswara
, p. 1693 - 1701 (2016)
The synthesis of 2-(4-methoxyphenyl)-3,4-(dihydroxy)piperidines was accomplished by using ethyl p-methoxycinnamate as the starting material and an acid-mediated amido cyclization reaction as the key step. This short and straightforward strategy avoids extra steps to create the chiral center and does not require a leaving group at the benzylic carbon. This study also showed that the stereochemical outcome of the cyclization reaction is influenced more by allylic 1,3-strain (A1,3 strain) than by the participation of a neighboring group. A short and straightforward strategy for the stereoselective synthesis of 2-(4-methoxyphenyl)-3,4-(dihydroxy)piperidines was developed. The key step of this synthetic approach involved an acid-mediated amido cyclization reaction, in which allylic 1,3-strain (A1,3strain) was the controlling element in determining the stereochemical outcome of the reaction.
On the Asymmetric Induction in Proline-Catalyzed Aldol Reactions: Reagent-Controlled Addition Reactions of 2,2-Dimethyl-1,3-dioxane-5-one to Acyclic Chiral α-Branched Aldehydes
Marjanovic Trajkovic, Jasna,Milanovic, Vesna,Ferjancic, Zorana,Saicic, Radomir N.
supporting information, p. 6146 - 6153 (2017/11/15)
Reagent stereocontrol in the proline-catalyzed aldol reaction of 2,2-dimethyl-1,3-dioxane-5-one 1 with chiral aldehydes has been investigated. Synthetically useful levels of diastereoselectivity could be achieved in reactions with acyclic chiral α-oxy and α-amino aldehydes in both matched and mismatched cases. By using this reaction as a key step, two medicinally relevant azasugars, 1-deoxy-galactonojirimycin (9) and 2,5-dideoxy-2,5-imino-d-altritol (10), were efficiently synthesized.
Synthesis of Aryl Carbohydrate Synthons and 2,3-Dihydroxypropanoic Acid Derivatives of High Optical Purity
Matthews, Barry R.,Jackson, W. Roy,Jacobs, Howard A.,Watson, Keith G.
, p. 1195 - 1214 (2007/10/02)
General routes to bith L and D aryl carbohydrate precursors and to erythro and threo 2,3-dihydroxypropanoic acid of high optical purity have been established from readily available optically active aryl cyanohydrins.
