A Novel and One-Step Procedure for Preparation of α-Bromo-α,β-unsaturated Carbonyl Compounds.

ChemInform ◽  
2003 ◽  
Vol 34 (10) ◽  
Author(s):  
G. V. Ramanarayanan ◽  
Vidyanand G. Shukla ◽  
K. G. Akamanchi
Keyword(s):  
Carbonyl Compounds ◽  
Step Procedure ◽  
One Step

A Novel and One Step Procedure for Preparation of α-Bromo-α,β-unsaturated Carbonyl Compounds

Synlett ◽  
2002 ◽  
pp. 2059-2061 ◽  
Author(s):  
K. G. Akamanchi ◽  
G. V. Ramanarayanan ◽  
Vidyanand G. Shukla
Keyword(s):  
Carbonyl Compounds ◽  
Step Procedure ◽  
One Step

scholarly journals Electrochromic Performance and Capacitor Performance of α-MoO3 Nanorods Fabricated by a One-Step Procedure

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 783
Author(s):  
Ying Duan ◽  
Chen Wang ◽  
Jian Hao ◽  
Yang Jiao ◽  
Yanchao Xu ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Average Diameter ◽  
Fast Response ◽  
Cycle Stability ◽  
Electrochromic Devices ◽  
Step Procedure ◽  
One Step ◽  
Supercapacitor Performance ◽  
First Time ◽  
Prepared Nanorods

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.

One-step procedure for the preparation of tertiary .alpha.-ketols from the corresponding ketones

1968 ◽  
Vol 33 (8) ◽  
pp. 3294-3297 ◽  
Author(s):  
J. N. Gardner ◽  
F. E. Carlon ◽  
O. Gnoj
Keyword(s):  
Step Procedure ◽  
One Step

An innovative and efficient method to synthesize meloxicam in one-step procedure with respect to the green chemistry

2018 ◽  
Vol 16 (3) ◽  
pp. 501-509 ◽  
Author(s):  
Pierrick Dufrénoy ◽  
Alina Ghinet ◽  
Marie Hechelski ◽  
Adam Daïch ◽  
Christophe Waterlot
Keyword(s):  
Green Chemistry ◽  
Efficient Method ◽  
Step Procedure ◽  
One Step

scholarly journals An effective GC method for the determination of the fatty acid composition in silkworm pupae oil using a two-step methylation process

2015 ◽  
Vol 80 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Jun Wang ◽  
Weiwei Wu ◽  
Xudong Wang ◽  
Min Wang ◽  
Fuan Wu
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Methyl Esters ◽  
Superior Performance ◽  
Step Procedure ◽  
Silkworm Pupae ◽  
Chromatographic Procedure ◽  
One Step ◽  
Synthesis Yield

In search of an accurate and effective method to determine fatty acid composition in silkworm pupae oils, five methylation methods were evaluated for use in the gas chromatographic (GC) quantitation of fatty acid methyl esters (FAMEs), including one-step esterification catalyzed by an acidic (H2SO4 and BF3) or alkali catalyst (KOH and NaOCH3) and a two-step procedure catalyzed successively by KOH and H2SO4. These methods were comparatively adopted to quantify FAMEs in silkworm pupae oil using GC-MS and GC and then validate their precision, stability and average recovery rates. The results indicated that compared with the other four methyl esterification methods, two-step methylation effectively improves the synthesis yield of FAMEs, conserves agents, and eliminates the usage of potential harmful reagents. The proposed GC method has been validated, shows good accuracy and precision, and has been applied successfully to the quantification of FAMEs in several varieties of silkworm pupae oils. The short analytical run time leads to low costs and a fast chromatographic procedure. In summary, two-step pretreatment had superior performance, providing technical references for the determination and analysis of fatty acids in other oils.

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