Ecofriendly syntheses of phenothiazones and related structures facilitated by laccase – A comparative study
Journal Article
·
· Tetrahedron Letters
- 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)
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Joint Institute for Biological Sciences (JIBS)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1327722
- Journal Information:
- Tetrahedron Letters, Journal Name: Tetrahedron Letters Journal Issue: 33 Vol. 57; ISSN 0040-4039
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Dioxygen Activation by Laccases: Green Chemistry for Fine Chemical Synthesis
|
journal | May 2018 |
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