- Visible-Light-Induced Oxidative α-Alkylation of Glycine Derivatives with Ethers under Metal-Free Conditions
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In this work, a visible-light-induced oxidative α-alkylation of glycine derivatives with ethers has been developed in the presence of catalytic Eosin Y. Under the blue light of a 3 W LED, a range of α-etherized glycine derivatives, including α-amino esters, α-amino ketones and α-amino amides, were achieved with good to excellent yields and functional group tolerance with tert-butyl hydroperoxide (TBHP) as oxidant at ambient temperature. The operationally easy procedure provides an economical, metal-free, and mild alternative for the synthesis of the α-etherized glycine derivatives.
- Song, Yang,Zhang, Hao,Guo, Jiabao,Shao, Yifei,Ding, Yuzhou,Zhu, Li,Yao, Xiaoquan
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p. 5914 - 5921
(2021/11/22)
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- Tunable Redox Potential Photocatalyst: Aggregates of 2,3-Dicyanopyrazino Phenanthrene Derivatives for the Visible-Light-Induced α-Allylation of Amines
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This work highlights the tunable redox potential of 6,11-dibromo-2,3-dicyanopyrazinophenanthrene (DCPP3) aggregates, which can be formed through physical π-πstacking interactions with other DCPP3 monomers. Electrochemical and scanning electron microscopy showed that the reduction potential of [DCPP3]n aggregates could be increased by decreasing their size. The size of [DCPP3]n aggregates could be regulated by controlling the concentration of DCPP3 in an organic solvent. As such, a fundamental understanding of this tunable redox potential is essential for developing new materials for photocatalytic applications. The [DCPP3]n aggregates as a visible-light photocatalyst in combination with Pd catalysts in the visible-light-induced α-allylation of amines were used. This [DCPP3]n photocatalyst exhibits excellent photo- and electrochemical properties, including a remarkable visible-light absorption, long excited-state lifetime (16.6 μs), good triplet quantum yield (0.538), and high reduction potential (Ered([DCPP3]n/[DCPP3]n-) > -1.8 V vs SCE).
- Bao, Ming,He, Min,Wang, Yi,Yu, Xiaoqiang
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p. 14720 - 14731
(2021/11/16)
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- Copper-catalyzed oxidative cross-coupling of α-aminocarbonyl compounds with primary amines toward 2-oxo-acetamidines
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A general and mild method for the construction of a carbon-nitrogen bond via copper-catalyzed oxidative cross-coupling of amines with α-aminocarbonyl compounds was achieved. Amines, either aliphatic primary amines, aromatic primary amines or secondary amines can be used as the starting materials. When R2 was different from R3, two isomers would be observed. Therefore, this reaction system has a broad substrate scope and provides a facile pathway for the synthesis of 2-oxo-acetamidines.
- Chen, Chuang,Zhu, Menghua,Jiang, Lihui,Zeng, Zebing,Yi, Niannian,Xiang, Jiannan
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p. 8134 - 8139
(2017/10/10)
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- CERAMIDE GALACTOSYLTRANSFERASE INHIBITORS FOR THE TREATMENT OF DISEASE
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Described herein are compounds, methods of making such compounds, pharmaceutical compositions and medicaments containing such compounds, and methods of using such compounds to treat or prevent diseases or disorders associated with the enzyme ceramide galactosyltransferase (CGT), such as, for example, lysosomal storage diseases. Examples of lysosomal storage diseases include, for example, Krabbe disease and Metachromatic Leukodystrophy.
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Paragraph 000358; 000359
(2018/01/17)
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- Synthesis of Multiple-Substituted Pyrroles via Gold(I)-Catalyzed Hydroamination/Cyclization Cascade
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A gold-catalyzed cascade hydroamination/cyclization reaction of α-amino ketones with alkynes to form substituted pyrroles has been developed. The method offers several advantages such as high regioselectivity with the tested cases, wide functional group tolerance, and easily accessible starting materials. The synthetic utility of the obtained pyrrole products was demonstrated by their efficient transformations to 2-vinylated pyrroles via gold-catalyzed intermolecular hydroarylation.
- Li, Xiangdong,Chen, Ming,Xie, Xin,Sun, Ning,Li, Shi,Liu, Yuanhong
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supporting information
p. 2984 - 2987
(2015/06/30)
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- Pyrazolopyrimidines as therapeutic agents
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The present invention is directed to pyrazolopyrimidine derivatives of formula (I) wherein the substituents are defined herein, which are useful as kinase inhibitors and as such are useful for affecting angiogenesis and diseases and conditions associated with angiogenesis.
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- A rapid and direct access to symmetrical/unsymmetrical 3,4-diarylmaleimides and pyrrolin-2-ones
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1,8-Diazabicyclo[5.4.0]undec-7ene (DBU) facilitated the oxidative cyclization of phenacyl amide in the presence of atmospheric oxygen under environmentally friendly conditions. The reaction has been studied under various conditions and a plausible mechani
- Pal, Manojit,Swamy, Nalivela Kumara,Hameed, P. Shahul,Padakanti, Srinivas,Yeleswarapu, Koteswar Rao
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p. 3987 - 3997
(2007/10/03)
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- Pyrazolopyrimidines as therapeutic agents
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The present invention provides compounds of Formula I, including pharmaceutically acceptable salts and/or prodrugs thereof, where G, R2, and R3 are defined as described herein.
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