Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Oct 8;24(19):3617. doi: 10.3390/molecules24193617

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Chemical structure of the catalysts evaluated in this study. HOBt: 1-hydroxybenzotriazole, 6-Cl-HOBt: 6-chloro-1-hydroxybenzotriazole, 6-CF₃-HOBt: 1-hydroxy-6-(trifluoromethyl)benzotriazole, HOAt: 3-hydroxytriazolo[4,5-b]pyridine, HOCt: ethyl 1-hydroxytriazole-4-carboxylate, Oxyma Pure: ethyl (2E)-2-cyano-2-hydroxyiminoacetate.