Divergent Synthesis of Quinazolin-4(3H)-ones and Tryptanthrins Enabled by a tert-Butyl Hydroperoxide/K3PO4-Promoted Oxidative Cyclization of Isatins at Room Temperature

2016 ◽  
Vol 18 (12) ◽  
pp. 2942-2945 ◽  
Author(s):  
Feng-Cheng Jia ◽  
Zhi-Wen Zhou ◽  
Cheng Xu ◽  
Yan-Dong Wu ◽  
An-Xin Wu
Keyword(s):  
Room Temperature ◽  
Oxidative Cyclization ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide

Efficient and selective copper-catalyzed organic solvent-free and biphasic oxidation of aromatic gem-disubstituted alkenes to carbonyl compounds by tert-butyl hydroperoxide at room temperature

2014 ◽  
Vol 16 (6) ◽  
pp. 3013-3017 ◽  
Author(s):  
Md. Munkir Hossain ◽  
Wei-Kai Huang ◽  
Hung-Jie Chen ◽  
Pei-Han Wang ◽  
Shin-Guang Shyu
Keyword(s):  
Organic Solvent ◽  
Carbonyl Compounds ◽  
Room Temperature ◽  
Oxidative Cleavage ◽  
Solvent Free ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide

Biphasic Cu(ii) catalyzed selective oxidative cleavage of aromatic gem-disubstituted alkenes to carbonyl compounds using tert-butyl hydroperoxide at room temperature.

A Metal-Free Synthesis of 3-Phenoxyimidazo Heterocycles by Catalytic Oxidative Cyclization of 2-Amino-azaarenes with Lignin Models

Synthesis ◽  
2018 ◽  
Vol 50 (16) ◽  
pp. 3169-3176 ◽  
Author(s):  
Li Zhao ◽  
Jian Zhang ◽  
Guofu Zhong ◽  
Yizhou Chen ◽  
Shanlu Wang ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Butyl Hydroperoxide ◽  
Metal Free ◽  
Tert Butyl ◽  
Air Atmosphere ◽  
Tert Butyl Hydroperoxide ◽  
Lignin Model

A metal-free catalytic oxidative cyclization of 2-aminopyridines and 2-aminobenzothiazole with lignin model 2-phenoxyacetophenones was developed, in which inexpensive iodine was used as the catalyst and tert-butyl hydroperoxide (TBHP) was the oxidant. The reaction proceeded smoothly under an air atmosphere to produce valuable 3-phenoxyimidazo[1,2-a]pyridines and 3-phenoxybenzo[d]imidazo[2,1-b]thiazoles, respectively, in moderate to good yields.

tert-Butyl hydroperoxide (TBHP)-mediated oxidative self-coupling of amines to imines over a α-MnO2 catalyst

2014 ◽  
Vol 16 (5) ◽  
pp. 2523-2527 ◽  
Author(s):  
Zhe Zhang ◽  
Feng Wang ◽  
Min Wang ◽  
Shutao Xu ◽  
Haijun Chen ◽  
...  
Keyword(s):  
Room Temperature ◽  
Direct Synthesis ◽  
Aliphatic Amines ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Aromatic And Aliphatic Amines

A methodology for the direct synthesis of imines from amines via a facile α-MnO2 catalyzed-procedure at room temperature with TBHP as an oxidant was described. The catalysis is suitability for 13 aromatic and aliphatic amines, and it is heterogeneous, recyclable and reusable.

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