Photocatalyst- and additive-free site-specific C(sp3)-H hydrazination of glycine derivatives and peptides

2021 ◽  
Author(s):  
Guang-Zu Wang ◽  
De-Guang Liu ◽  
Meng-Ting Liu ◽  
Yao Fu
Keyword(s):  
Visible Light ◽  
Coupling Reaction ◽  
Azo Compounds ◽  
Site Specific ◽  
Glycine Derivatives

A visible-light-mediated protocol for site-specific C(sp3)-H hydrazination of glycine derivatives and peptides with azo compounds has been developed. This C(sp3)-N coupling reaction proceeded smoothly under photo-irradiation conditions in the absence...

Visible-light-enabled aerobic oxidative Csp3–H functionalization of glycine derivatives using an organic photocatalyst: access to substituted quinoline-2-carboxylates

2020 ◽  
Vol 18 (40) ◽  
pp. 8179-8185
Author(s):  
Jingxin Wang ◽  
Liqi Li ◽  
Ying Guo ◽  
Shengyu Li ◽  
Shutao Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Coupling Reaction ◽  
Metal Free ◽  
Dehydrogenative Coupling ◽  
Glycine Derivatives

A metal-free visible-light-induced aerobic oxidative dehydrogenative coupling reaction of glycine derivatives with olefins has been developed to efficiently synthesize quinoline-2-carboxylates.

Visible light-induced aerobic oxidative cross-coupling reaction: preparation of α-indolyl glycine derivatives

2020 ◽  
Vol 44 (2) ◽  
pp. 313-316 ◽  
Author(s):  
Cheng Ni ◽  
Wei Chen ◽  
Chunhui Jiang ◽  
Hongfei Lu
Keyword(s):  
Visible Light ◽  
Rose Bengal ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Organic Dye ◽  
Cross Coupling Reaction ◽  
The Cross ◽  
Glycine Derivatives

Rose Bengal, an organic dye, has been used as a photocatalyst in the cross-coupling reaction between glycine derivatives and indoles.

Catalyst-Free Visible-Light-Induced Decarboxylative Amination of Glycine Derivatives with Azo Compounds

2021 ◽  
Author(s):  
Cen Zhou ◽  
Xiaozhou Huang ◽  
Ya-Qing Hu ◽  
Jun-Yan Wu ◽  
Ying Zheng ◽  
...  
Keyword(s):  
Amino Acids ◽  
Transition Metals ◽  
Visible Light ◽  
Organic Dyes ◽  
Azo Compounds ◽  
Catalyst Free ◽  
Glycine Derivatives

α‑Amino acids such as glycine derivatives have been commonly utilized as reagents for decarboxylative functionalization. In contrast to previous reports that require transition-metals and organic dyes to promote this process,...

scholarly journals Elemental composition control of gold-titania nanocomposites by site-specific mineralization using artificial peptides and DNA

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Makoto Ozaki ◽  
Takahito Imai ◽  
Takaaki Tsuruoka ◽  
Shungo Sakashita ◽  
Kin-ya Tomizaki ◽  
...  
Keyword(s):  
Visible Light ◽  
Elemental Composition ◽  
Inorganic Compounds ◽  
Medical Science ◽  
Induction Effect ◽  
Site Specific ◽  
Composition Control ◽  
Light Excitation ◽  
Titania Photocatalyst ◽  
Scale Control

AbstractBiomineralization, the precipitation of various inorganic compounds in biological systems, can be regulated in terms of the size, morphology, and crystal structure of these compounds by biomolecules such as proteins and peptides. However, it is difficult to construct complex inorganic nanostructures because they precipitate randomly in solution. Here, we report that the elemental composition of inorganic nanocomposites can be controlled by site-specific mineralization by changing the number of two inorganic-precipitating peptides bound to DNA. With a focus on gold and titania, we constructed a gold-titania photocatalyst that responds to visible light excitation. Both microscale and macroscale observations revealed that the elemental composition of this gold-titania nanocomposite can be controlled in several ten nm by changing the DNA length and the number of peptide binding sites on the DNA. Furthermore, photocatalytic activity and cell death induction effect under visible light (>450 nm) irradiation of the manufactured gold-titania nanocomposite was higher than that of commercial gold-titania and titania. Thus, we have succeeded in forming titania precipitates on a DNA terminus and gold precipitates site-specifically on double-stranded DNA as intended. Such nanometer-scale control of biomineralization represent a powerful and efficient tool for use in nanotechnology, electronics, ecology, medical science, and biotechnology.

Visible-Light-Promoted Direct Amination of Phenols via Oxidative Cross-Dehydrogenative Coupling Reaction

2016 ◽  
Vol 18 (14) ◽  
pp. 3326-3329 ◽  
Author(s):  
Yating Zhao ◽  
Binbin Huang ◽  
Chao Yang ◽  
Wujiong Xia
Keyword(s):  
Visible Light ◽  
Coupling Reaction ◽  
Direct Amination ◽  
Dehydrogenative Coupling
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