Literature DB >> 24606030

Squaramide equilibrium acidities in DMSO.

Xiang Ni1, Xin Li, Zhen Wang, Jin-Pei Cheng.   

Abstract

A number of popular squaramide organocatalysts' acidities were determined by an overlapping indicator method in DMSO via UV spectrophotometric titrations. The pKa values are in the range of 8.37-16.46. The results may be helpful for the rational design and development of squaramide type new catalysts.

Entities:  

Year:  2014        PMID： 24606030     DOI： 10.1021/ol5005017

Source DB:  PubMed          Journal:  Org Lett        ISSN： 1523-7052            Impact factor:   6.005


  7 in total

1.  Lewis acid enhancement by hydrogen-bond donors for asymmetric catalysis.

Authors:  Steven M Banik; Anna Levina; Alan M Hyde; Eric N Jacobsen
Journal:  Science       Date:  2017-11-10       Impact factor: 47.728

2.  Thiosquaramides: pH switchable anion transporters.

Authors:  Nathalie Busschaert; Robert B P Elmes; Dawid D Czech; Xin Wu; Isabelle L Kirby; Evan M Peck; Kevin D Hendzel; Scott K Shaw; Bun Chan; Bradley D Smith; Katrina A Jolliffe; Philip A Gale
Journal:  Chem Sci       Date:  2014-09-01       Impact factor: 9.825

3.  Chloride-Mediated Alkene Activation Drives Enantioselective Thiourea and Hydrogen Chloride Co-Catalyzed Prins Cyclizations.

Authors:  Dennis A Kutateladze; Corin C Wagen; Eric N Jacobsen
Journal:  J Am Chem Soc       Date:  2022-08-22       Impact factor: 16.383

4.  Connecting and Analyzing Enantioselective Bifunctional Hydrogen Bond Donor Catalysis Using Data Science Tools.

Authors:  Jacob Werth; Matthew S Sigman
Journal:  J Am Chem Soc       Date:  2020-09-10       Impact factor: 15.419

5.  Quantification of electrophilic activation by hydrogen-bonding organocatalysts.

Authors:  Ryan R Walvoord; Phuong N H Huynh; Marisa C Kozlowski
Journal:  J Am Chem Soc       Date:  2014-11-04       Impact factor: 15.419

6.  Bifunctional Iminophosphorane-Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides.

Authors:  Daniel Rozsar; Michele Formica; Ken Yamazaki; Trevor A Hamlin; Darren J Dixon
Journal:  J Am Chem Soc       Date:  2022-01-06       Impact factor: 15.419

7.  Anion-Induced Reversible Actuation of Squaramide-Crosslinked Polymer Gels.

Authors:  Stefan Mommer; Sander J Wezenberg
Journal:  ACS Appl Mater Interfaces       Date:  2022-09-13       Impact factor: 10.383
  7 in total

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