Equilibrium acidities of cinchona alkaloid organocatalysts bearing 6′-hydrogen bonding donors in DMSO-Reference-Cited by-同舟云学术

Equilibrium acidities of cinchona alkaloid organocatalysts bearing 6′-hydrogen bonding donors in DMSO

Published:2016 Issue:2 Volume:3 Page:170-176
ISSN:2052-4129
Container-title:Organic Chemistry Frontiers
language:en
Short-container-title:Org. Chem. Front.

Author:

Ni Xiang¹²³⁴⁵,Li Xin¹²³⁴⁵,Cheng Jin-Pei⁶⁴⁵⁷²

Affiliation:

1. State Key Laboratory of Elemento-Organic Chemistry

2. Department of Chemistry

3. Nankai University

4. Tianjin 300071

5. China

6. Collaborative Innovation Center of Chemical Science and Engineering

7. Center of Basic Molecular Science

Abstract

The pK_a values of 18 cinchona alkaloid based organocatalysts bearing 6′-hydrogen bonding donors were determined by the overlapping indicator method in DMSO via UV spectrophotometric titrations. The pK_a values are in the range of 6.76–20.24.

Publisher

Royal Society of Chemistry (RSC)

Subject

Organic Chemistry

Link

http://pubs.rsc.org/en/content/articlepdf/2016/QO/C5QO00305A

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