New chiral 1,2-aminoalcohols derived from biomass and their application in diethyl zinc additions
摘要:
A convenient procedure for the preparation of chiral 1,2-aminoalcohols starting from levoglucosenone, a biomass derivative, is described. The 1,2-aminoalcohols, bearing primary, secondary, and tertiary amino groups, were tested as chiral catalysts in the asymmetric addition of diethyl zinc to benzaldehyde. (C) 2014 Elsevier Ltd. All rights reserved.
Microwave-Assisted Regioselective Cycloaddition Reactions between 9-Substituted Anthracenes and Levoglucosenone
作者:Ariel M. Sarotti、Madeleine M. Joullié、Rolando A. Spanevello、Alejandra G. Suárez
DOI:10.1021/ol062254g
日期:2006.11.1
The cycloaddition reactions of 9-substitutedanthracenes and levoglucosenone were investigated under microwave irradiation and conventional heating conditions. Considering time, yields, and regioselectivity, microwave technology has proven to be an ideal tool to achieve this chemical transformation. [reaction: see text].
Second generation levoglucosenone-derived chiral auxiliaries. Scope and application in asymmetric Diels–Alder reactions
作者:Ariel M. Sarotti、Rolando A. Spanevello、Alejandra G. Suárez
DOI:10.1016/j.tet.2009.02.020
日期:2009.4
Chiral alcohols were designed and easily prepared from levoglucosenone, a biomass-derived valuable synthon. These alcohols were tested as chiral auxiliaries in asymmetric Diels-Alder reactions between the corresponding acrylates with acyclic and cyclic dienes. The regio, stereo, and facial selectivity varied from very good to excellent, depending upon the benzylic substitution of the auxiliary and the diene employed. As a consequence, after removal of the auxiliary, the resulting carboxylic acid derivatives were obtained in 72-99% ee. (C) 2009 Elsevier Ltd. All rights reserved.
Development of polymer-supported chiral aminoalcohols derived from biomass and their application to asymmetric alkylation
作者:María C. Botta、Hernán D. Biava、Rolando A. Spanevello、Ernesto G. Mata、Alejandra G. Suárez
DOI:10.1016/j.tetlet.2016.04.021
日期:2016.5
starting from easily available and renewable chiralbuildingblocks. They were tested as chiral ligands for the asymmetric diethylzinc addition to carbonyl compounds. Enantioselectivities were comparable to those observed for non-immobilized analogs. These results provide strong evidence for the flexibility of our approach to generate highly valuable supported chiral ligands derived from cellulose-rich materials
New chiral 1,2-aminoalcohols derived from biomass and their application in diethyl zinc additions
作者:María M. Zanardi、María C. Botta、Alejandra G. Suárez
DOI:10.1016/j.tetlet.2014.08.124
日期:2014.10
A convenient procedure for the preparation of chiral 1,2-aminoalcohols starting from levoglucosenone, a biomass derivative, is described. The 1,2-aminoalcohols, bearing primary, secondary, and tertiary amino groups, were tested as chiral catalysts in the asymmetric addition of diethyl zinc to benzaldehyde. (C) 2014 Elsevier Ltd. All rights reserved.