scholarly journals Selective copper(II) acetate and potassium iodide catalyzed oxidation of aminals to dihydroquinazoline and quinazolinone alkaloids

2013 ◽  
Vol 9 ◽  
pp. 1194-1201 ◽  
Author(s):  
Matthew T Richers ◽  
Chenfei Zhao ◽  
Daniel Seidel
Keyword(s):  
Natural Products ◽  
Acetic Acid ◽  
Selective Oxidation ◽  
Potassium Iodide ◽  
Facile Preparation ◽  
Catalyzed Oxidation

Copper(II) acetate/acetic acid/O2 and potassium iodide/tert-butylhydroperoxide systems are shown to affect the selective oxidation of ring-fused aminals to dihydroquinazolines and quinazolinones, respectively. These methods enable the facile preparation of a number of quinazoline alkaloid natural products and their analogues.

Application of Dess-Martin oxidation in total synthesis of natural products

2020 ◽  
Vol 17 ◽  
Author(s):  
Majid M. Heravi ◽  
Tayebe Momeni ◽  
Vahideh Zadsirjan ◽  
Leila Mohammadi
Keyword(s):  
Natural Products ◽  
Total Synthesis ◽  
Selective Oxidation ◽  
Secondary Alcohols ◽  
Aldehydes And Ketones

: Dess–Martin periodinane (DMP), is a commercially available chemical, frequently being utilized as a mild oxidative agent for the selective oxidation of primary and secondary alcohols to their corresponding aldehydes and ketones, respectively. DMP shows several merits over other common oxidative agent such as chromium- and DMSO-based oxidants, thus it is habitually employed in the total synthesis of natural products. In this review, we try to underscore the applications of DMP as an effective oxidant in an appropriate step (steps) in the multistep total synthesis of natural products.

Catalyzed Oxidation of Cyclohexane over Co-Bi2(MoO4)3 Catalysts

2012 ◽  
Vol 550-553 ◽  
pp. 354-357
Author(s):  
Su Ling Gao ◽  
Tai Xuan Jia ◽  
Zi Li Liu
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Selective Oxidation ◽  
Atomic Ratio ◽  
Precipitation Method ◽  
Micro Structure ◽  
Cooperative Effects ◽  
Catalyzed Oxidation

The effect of catalyst on the performance of liquid-phase selective oxidation of cyclohexane as probe reaction over Co-Bi2(MoO4)3 prepared by precipitation method was investigated. The catalyst evaluation results show that the optimum catalyst atomic ratio is n(Mo):n(Bi):n(Co)=1.5:1:0.2 with high selecivity under certain conversion. Meanwhile selective oxidation of Bi2(MoO4)3 was slowed down, selecivity of cyclohexanone and cyclohexanol reached 74.1%, 22.2% respectively.The main composition of the catalyst is Bi2(MoO4)3. Co-Bi2(MoO4)3 had new catalyst sites with Bi3+, Mo6+ and Co2+ having a cooperative effects during oxidation of cyclohexane. Under this condition, selecivity of cyclohexanone improved greatly. Micro-structure and essence disciplinarian of Co-Bi2(MoO4)3 were disclosed by XRD and FTIR. This study could provide experimental data for the technical reform of industry equipment.

Green and facile preparation and dual-enhancement cytotoxicity of eupatilin loaded on hollow gold nanoparticles under near-infrared light

2021 ◽  
Author(s):  
Yi-wei Sun ◽  
Hui Liang ◽  
Kun-qi Zong ◽  
Xin Che ◽  
Da-li Meng
Keyword(s):  
Gold Nanoparticles ◽  
Natural Products ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Hollow Gold Nanoparticles ◽  
Facile Preparation ◽  
Gold Nanomaterials ◽  
Anti Tumor Activity ◽  
Targeted Release

Using NIR irradiation, gold nanomaterials loaded with natural products can achieve targeted release as well as better anti-tumor activity.

ChemInform Abstract: Selective Oxidation of Primary Silyl Ethers and Its Application to the Synthesis of Natural Products.

ChemInform ◽  
2010 ◽  
Vol 30 (40) ◽  
pp. no-no
Author(s):  
A. Rodriguez ◽  
M. Nomen ◽  
B. W. Spur ◽  
J. J. Godfroid
Keyword(s):  
Natural Products ◽  
Selective Oxidation ◽  
Silyl Ethers

Generation of electronic energy in the peroxidase catalyzed oxidation of indole-3-acetic acid

1975 ◽  
Vol 65 (1) ◽  
pp. 138-145 ◽  
Author(s):  
Carmen C.C. Vidigal ◽  
Klaus Zinner ◽  
Nelson Duran ◽  
Etelvino J.H. Bechara ◽  
Giuseppe Cilento
Keyword(s):  
Acetic Acid ◽  
Electronic Energy ◽  
Catalyzed Oxidation ◽  
Indole 3 Acetic Acid

Acetic acid stability in the presence of oxygen over vanadium phosphate catalysts: comments on the design of catalysts for the selective oxidation of ethane

2002 ◽  
Vol 226 (1-2) ◽  
pp. 323-327 ◽  
Author(s):  
Jose Antonio Lopez-Sanchez ◽  
Richard Tanner ◽  
Paul Collier ◽  
Richard P.K. Wells ◽  
Colin Rhodes ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Selective Oxidation ◽  
Vanadium Phosphate ◽  
Acid Stability
Sign in / Sign up

Export Citation Format

Share Document