Enantiocomplementary C-H Bond Hydroxylation Combining Photo-Catalysis and Whole-Cell Biocatalysis in a One-Pot Cascade Process

2020 ◽  
Vol 2020 (7) ◽  
pp. 821-825 ◽  
Author(s):  
Yongzhen Peng ◽  
Danyang Li ◽  
Jiajie Fan ◽  
Weihua Xu ◽  
Jian Xu ◽  
...  
2019 ◽  
Vol 21 (8) ◽  
pp. 1907-1911 ◽  
Author(s):  
Jian Xu ◽  
Mamatjan Arkin ◽  
Yongzhen Peng ◽  
Weihua Xu ◽  
Huilei Yu ◽  
...  

The first demonstration of photochemo-enzymatic whole-cell one-pot enantiocomplementary decarboxylative hydroxylation.


2020 ◽  
Vol 5 (45) ◽  
pp. 14292-14295
Author(s):  
Yuling Zhu ◽  
Taiwei Yang ◽  
Yueyang Chen ◽  
Cong Fan ◽  
Jifeng Yuan

Author(s):  
Shreyans Chordia ◽  
Siddarth Narasimhan ◽  
Alessandra Lucini Paioni ◽  
Marc Baldus ◽  
Gerard Roelfes

Author(s):  
Tanushree Baldeo Madavi ◽  
Sushma Chauhan ◽  
Anushri Keshri ◽  
Hemasundar Alavilli ◽  
Kwon‐Young Choi ◽  
...  

2005 ◽  
Vol 83 (6-7) ◽  
pp. 681-692 ◽  
Author(s):  
Wen-Hua Chiou ◽  
Seung-Yub Lee ◽  
Iwao Ojima

This article describes recent advances in the cyclohydrocarbonylation reactions catalyzed by transition-metal complexes and their applications in organic synthesis as a review covering the relevant literature up to the middle of 2004. The reactions are categorized into four types, i.e., intramolecular amidocarbonylation reactions, intramolecular aminocarbonylation reactions, cyclohydrocarbonylation reactions involving carbon–nucleophiles, and other cyclohydrocarbonylation reactions. Cyclohydrocarbonylation reactions provide efficient routes to various monocyclic, bicyclic, and polycyclic compounds as a one-step cascade process or a one-pot process. Reaction mechanisms for these cascade processes are discussed as needed for clarification. The heterocyclic and carbocyclic compounds, thus obtained, can be further transformed to specific targets. Examples of such applications are also discussed.Key words: catalysis, cyclohydrocarbonylation, hydroformylation, amidocarbonylation, cyclization, regioselectivity, aldehydes, regioselective, cascade, heterocycles, rhodium.


RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17288-17292 ◽  
Author(s):  
Yiyong Zhao ◽  
Junjie Wei ◽  
Shuting Ge ◽  
Guofu Zhang ◽  
Chengrong Ding

Our gram-scale process uses abundant and inexpensive aldehydes, a clean nitrogen source, requires no additional carbon atoms, is transition-metal free, and features easy work-up and excellent functional group compatibility.


2009 ◽  
Vol 75 (20) ◽  
pp. 6545-6552 ◽  
Author(s):  
S. V. B. Janardhan Garikipati ◽  
Angela M. McIver ◽  
Tonya L. Peeples

ABSTRACT Whole-cell biocatalysis to oxidize naphthalene to 1-naphthol in liquid-liquid biphasic systems was performed. Escherichia coli expressing TOM-Green, a variant of toluene ortho-monooxygenase (TOM), was used for this oxidation. Three different solvents, dodecane, dioctyl phthalate, and lauryl acetate, were screened for biotransformations in biphasic media. Of the solvents tested, lauryl acetate gave the best results, producing 0.72 ± 0.03 g/liter 1-naphthol with a productivity of 0.46 ± 0.02 g/g (dry weight) cells after 48 h. The effects of the organic phase ratio and the naphthalene concentration in the organic phase were investigated. The highest 1-naphthol concentration (1.43 g/liter) and the highest 1-naphthol productivity (0.55 g/g [dry weight] cells) were achieved by optimization of the organic phase. The ability to recycle both free cells and cells immobilized in calcium alginate was tested. Both free and immobilized cells lost more than ∼60% of their activity after the first run, which could be attributed to product toxicity. On a constant-volume basis, an eightfold improvement in 1-naphthol production was achieved using biphasic media compared to biotransformation in aqueous media.


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