Continuous asymmetric Michael addition of ketones to β-nitroolefins over (1R,2R)-(+)-1,2-DPEN-modified sulfonic acid resin

2015 ◽  
Vol 5 (2) ◽  
pp. 724-728 ◽  
Author(s):  
Jun Tian ◽  
Chao Zhang ◽  
Xuefei Qi ◽  
Xilong Yan ◽  
Yang Li ◽  
...  
Keyword(s):  
Michael Addition ◽  
Sulfonic Acid ◽  
Acid Resin ◽  
Asymmetric Michael Addition ◽  
Sulfonic Acid Resin

A trifunctional catalyst was successfully prepared by bonding (1R,2R)-(+)-1,2-DPEN to sulfonic acid resin.

ChemInform Abstract: Sulfonic Acid Resin-Catalyzed Oxidation of Aldehydes to Carboxylic Acids by Hydrogen Peroxide.

ChemInform ◽  
2013 ◽  
Vol 44 (29) ◽  
pp. no-no
Author(s):  
Xiaomei Yang ◽  
Si Tang ◽  
Tianliang Lu ◽  
Chen Chen ◽  
Lipeng Zhou ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Carboxylic Acids ◽  
Sulfonic Acid ◽  
Acid Resin ◽  
Catalyzed Oxidation ◽  
Sulfonic Acid Resin

scholarly journals Ion-exchange-resin-catalyzed adamantylation of phenol derivatives with adamantanols: Developing a clean process for synthesis of 2-(1-adamantyl)-4-bromophenol, a key intermediate of adapalene

2012 ◽  
Vol 8 ◽  
pp. 227-233 ◽  
Author(s):  
Nan Wang ◽  
Ronghua Wang ◽  
Xia Shi ◽  
Gang Zou
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Sulfonic Acid ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Phenol Derivatives ◽  
Resin Catalyst ◽  
Acid Resin ◽  
Free Process ◽  
Sulfonic Acid Resin

A clean process has been developed for the synthesis of 2-adamantylphenol derivatives through adamantylation of substituted phenols with adamantanols catalyzed by commercially available and recyclable ion-exchange sulfonic acid resin in acetic acid. The sole byproduct of the adamantylation reaction, namely water, could be converted into the solvent acetic acid by addition of a slight excess of acetic anhydride during the work-up procedure, making the process waste-free except for regeneration of the ion-exchange resin, and facilitating the recycling of the resin catalyst. The ion-exchange sulfonic acid resin catalyst could be readily recycled by filtration and directly reused at least ten times without a significant loss of activity. The key intermediate of adapalene, 2-(1-adamantyl)-4-bromophenol, could be produced by means of this waste-free process.

A highly efficient sulfonic acid resin for liquid-phase carbonylation of dimethoxymethane

2018 ◽  
Vol 8 (2) ◽  
pp. 580-590 ◽  
Author(s):  
Fei Chen ◽  
Lei Shi ◽  
Jie Yao ◽  
Yan Wang ◽  
Dongxi Zhang ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Sulfonic Acid ◽  
Highly Efficient ◽  
Resin Catalyst ◽  
Acid Resin ◽  
Sulfonic Acid Resin

The influence of H2O content on DMM carbonylation using a DICP-001 resin catalyst (Fig. 6).

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