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pro vyhledávání: '"Purugula Venkanna"'
Publikováno v:
International Journal of Chemical Kinetics. 51:445-462
Autor:
M. Venkateswarlu, Chinna Rajanna Kamatala, Purugula Venkanna, Mukka Satish Kumar, P. K. Saiprakash
Publikováno v:
Chemical Methodologies, Vol 1, Iss Issue 2. pp. 87-193, Pp 87-97 (2017)
Benzamide/ Sulfuryl Chloride (SO2Cl2) reagent has been developed as a Vilsmeier- Haack(VH) reagent for benzoylation of aromatic compounds by using the conventional and ultrasonic sonication (US), and microwave (MW) conditions. Benzoylation is much mo
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Autor:
M. Venkateswarlu, M. Satish Kumar, Bhooshan Muddam, Purugula Venkanna, Kamatala Chinna Rajanna
Publikováno v:
Synlett. 29:85-88
Symmetrical trichlorotriazine derivatives such as 2,4,6-trichloro-1,3,5-triazine and trichloroisocyanuric acid were explored as Vilsmeier–Haack type reagents in the presence of N,N-dimethylacetamide for the effective synthesis of 3-acetyl-2-chloroq
Autor:
Kamatala Chinna Rajanna, M. Satish Kumar, Purugula Venkanna, M. Venkateswarlu, V. Sudhakar Chary
Publikováno v:
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry. 46:642-646
An efficient method for decarboxylative bromination of cinnamic acids (α,β-unsaturated carboxylic acids or 3-arylpropenoic acids) was achieved under relatively mild conditions using Vilsmeier-Haack reagent and KBr in acetonitrile media. Vilsmeier-H
Autor:
K. Ramesh, G. Krishnaiah, Kamatala Chinna Rajanna, B. Suresh, P. Srinivas, M. Satish Kumar, Purugula Venkanna, M. Venkateswarlu, V. Sudhakar Chary, K. Rajendar Reddy
Publikováno v:
Green Chemistry Letters and Reviews. 8:50-55
Ultrasonic and microwave-assisted practical methods have been developed for the nitration of phenols using metal nitrates in aqueous polyethylene glycol (PEG) media. Solvent is recycled three times for reproducibility. It was recycled with minimum lo
Autor:
Kamatala Chinna Rajanna, M. Venkateswarlu, Purugula Venkanna, Mukka Satish Kumar, P. K. Saiprakash
Publikováno v:
Synthetic Communications. 45:2251-2258
An efficient and safe method for nitration of aromatic compounds and decarboxylative nitration of α,β-unsaturated acids was developed using trichloroisocyanuric acid (TCICA)/dimethylformamide (DMF) in the presence of NaNO2. The reaction times of co
Autor:
Fatima, Touheeth, Duguta, Govardhan, Purugula, Venkanna, Yelike, Hemanth Sriram, Kamatala, Chinna Rajanna
Publikováno v:
Phosphorus, Sulfur & Silicon & the Related Elements; 2020, Vol. 195 Issue 12, p1001-1006, 6p
Autor:
M. Satish Kumar, Y. Hemanth Sriram, M. Venkateswarlu, K. C. Rajanna, M. Sai Sudhakar, Purugula Venkanna, P. K. Saiprakash
Silica supported perchloric acid and bisulfate (SiO2/HClO4 and SiO2/KHSO4) have been developed as reusable green catalysts for nitration of aromatic compounds using NaNO2 in acetonitrile medium under conventional and solvent free microwave conditions
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Publikováno v:
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry. 45:97-103
A new and efficient method for the chlorodehydration of alcohols utilizing TCCA/DMF is described. Various alcohols can be converted smoothly into their corresponding alkyl chlorides in high yields under mild conditions with short reaction times.