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Title: Laccase-catalyzed synthesis of 2,3-ethylenedithio-1,4-quinones

Journal Article · · Journal of Molecular Catalysis B: Enzymatic
 [1];  [2]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States); Univ. of Tennessee, Knoxville, TN (United States)

Laccases (benzenediol:oxygen oxidoreductase EC 1.10.3.2) are part of a family of multicopper oxidases. These environmentally friendly enzymes require O2 as their only co-substrate and produce H2O as their sole by-product. As a result, they have acquired increasing use in biotechnological applications, particularly in the field of organic synthesis. In the current study, laccases have been employed to successfully couple 1,2-ethanedithiol to various substituted hydroquinones to produce novel 2,3-ethylenedithio-1,4-quinones in good yields via an oxidation–addition–oxidation–addition–oxidation mechanism. The reactions proceeded in one-pot under mild conditions (room temperature, pH 5.0). This study further supports the use of laccases as green tools in organic chemistry. Furthermore, it provides evidence that laccase-catalyzed cross-coupling reactions involving small thiols are possible, in spite of research that suggests small thiols are potent inhibitors of laccases.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1376559
Journal Information:
Journal of Molecular Catalysis B: Enzymatic, Vol. 119; ISSN 1381-1177
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Laccase-Catalyzed CS and CC Coupling for a One-Pot Synthesis of 1,4-Naphthoquinone Sulfides and 1,4-Naphthoquinone Sulfide Dimers journal March 2013
A one-pot synthesis of 1,4-naphthoquinone-2,3-bis-sulfides catalysed by a commercial laccase journal January 2012
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Cited By (4)

The development of CotA mediator cocktail system for dyes decolorization journal March 2018
Laccase-catalyzed green synthesis and cytotoxic activity of novel pyrimidobenzothiazoles and catechol thioethers journal January 2017
Laccase catalysis for the synthesis of bioactive compounds journal November 2016
Efficient and sustainable laccase-catalyzed iodination of p -substituted phenols using KI as iodine source and aerial O 2 as oxidant journal January 2019

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