Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study
Abstract
The biocatalytic synthesis of phenothiazones and related compounds has been achieved in an aqueous system under mild conditions facilitated by laccase oxidation. It was found that by coupling 2-aminothiophenol directly with 1,4-quinones, the product yields could be significantly increased compared to generating the 1,4-quinones in situ from the corresponding hydroquinones via laccase oxidation. However, laccase still proved to be pivotal for achieving highest product yields by catalyzing the final oxidation step. Furthermore, a difference in reactivity of aromatic and aliphatic amines toward 1,4-naphthoquinone is observed. Furthermore, this study provides a sustainable approach to the synthesis of a biologically important class of compounds.
- Authors:
-
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Joint Institute for Biological Sciences (JIBS)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1327722
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Tetrahedron Letters
- Additional Journal Information:
- Journal Volume: 57; Journal Issue: 33; Journal ID: ISSN 0040-4039
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; biocatalysis; green chemistry; laccase; phenothiazones; thiol-amine
Citation Formats
Cannatelli, Mark D., and Ragauskas, Arthur J. Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study. United States: N. p., 2016.
Web. doi:10.1016/j.tetlet.2016.07.016.
Cannatelli, Mark D., & Ragauskas, Arthur J. Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study. United States. https://doi.org/10.1016/j.tetlet.2016.07.016
Cannatelli, Mark D., and Ragauskas, Arthur J. Wed .
"Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study". United States. https://doi.org/10.1016/j.tetlet.2016.07.016. https://www.osti.gov/servlets/purl/1327722.
@article{osti_1327722,
title = {Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study},
author = {Cannatelli, Mark D. and Ragauskas, Arthur J.},
abstractNote = {The biocatalytic synthesis of phenothiazones and related compounds has been achieved in an aqueous system under mild conditions facilitated by laccase oxidation. It was found that by coupling 2-aminothiophenol directly with 1,4-quinones, the product yields could be significantly increased compared to generating the 1,4-quinones in situ from the corresponding hydroquinones via laccase oxidation. However, laccase still proved to be pivotal for achieving highest product yields by catalyzing the final oxidation step. Furthermore, a difference in reactivity of aromatic and aliphatic amines toward 1,4-naphthoquinone is observed. Furthermore, this study provides a sustainable approach to the synthesis of a biologically important class of compounds.},
doi = {10.1016/j.tetlet.2016.07.016},
url = {https://www.osti.gov/biblio/1327722},
journal = {Tetrahedron Letters},
issn = {0040-4039},
number = 33,
volume = 57,
place = {United States},
year = {2016},
month = {7}
}
Web of Science
Works referencing / citing this record:
Dioxygen Activation by Laccases: Green Chemistry for Fine Chemical Synthesis
journal, May 2018
- Romero-Guido, Cynthia; Baez, Antonino; Torres, Eduardo
- Catalysts, Vol. 8, Issue 6