Catalyst-free, one-pot, four-component green synthesis of functionalized 1-(2-fluorophenyl)-1,4-dihydropyridines under ultrasound irradiation

2016 ◽  
Vol 40 (6) ◽  
pp. 5107-5112 ◽  
Author(s):  
Nhlanhla Shabalala ◽  
Suresh Maddila ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Aqueous Ethanol ◽  
Ultrasound Irradiation ◽  
One Pot ◽  
Catalyst Free ◽  
New Compounds ◽  
Synthesis Protocol

A catalyst-free synthesis protocol for functionalized 1,4-dihydropyridines under ultrasonic irradiation in aqueous ethanol is reported with excellent yields. Eleven new compounds are synthesized using dimethylacetylenedicarboxylate, 2-fluoroaniline, malononitrile and various substituted aldehydes.

Facile one-pot green synthesis of 2-amino-4H-benzo[g]chromenes in aqueous ethanol under ultrasound irradiation

2020 ◽  
Vol 50 (13) ◽  
pp. 1960-1971 ◽  
Author(s):  
Shabalala Nhlanhla Gracious ◽  
Nagaraju Kerru ◽  
Suresh Maddila ◽  
Werner E. van Zyl ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Green Synthesis ◽  
Aqueous Ethanol ◽  
Ultrasound Irradiation ◽  
One Pot

A greener procedure for the synthesis of α-ureidophosphonates under ultrasound irradiation. An X-ray crystallographic study

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99775-99780 ◽  
Author(s):  
Abdeslem Bouzina ◽  
Malika Berredjem ◽  
Sofiane Bouacida ◽  
Hocine Merazig ◽  
Nour-eddine Aouf
Keyword(s):  
Ultrasonic Irradiation ◽  
Reaction Times ◽  
Ultrasound Irradiation ◽  
One Pot ◽  
X Ray ◽  
Catalyst Free ◽  
Crystallographic Study ◽  
Three Component Reaction

The synthesis of α-ureidophosphonates via a one-pot three-component reaction using ultrasonic irradiation under solvent- and catalyst-free conditions at 75° is developed. The products were obtained in excellent yields within short reaction times.

Catalyst-free synthesis of novel isopropyl 2-amino-7,7-dimethyl-4-(aryl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate derivatives in aqueous ethanol under ultrasound irradiation

2020 ◽  
Vol 26 ◽  
pp. 100365 ◽  
Author(s):  
Nhlanhla Gracious Shabalala ◽  
Nagaraju Kerru ◽  
Suresh Maddila ◽  
Werner E. van Zyl ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Aqueous Ethanol ◽  
Ultrasound Irradiation ◽  
Catalyst Free

scholarly journals A multicomponent, facile and catalyst-free microwave-assisted protocol for the synthesis of pyrazolo-[3,4-b]-quinolines under green conditions

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30768-30772 ◽  
Author(s):  
Mandlenkosi Robert Khumalo ◽  
Surya Narayana Maddila ◽  
Suresh Maddila ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Ambient Temperature ◽  
Aqueous Ethanol ◽  
Reaction Medium ◽  
One Pot ◽  
Microwave Assisted ◽  
Catalyst Free ◽  
Green Conditions

A facile, swift and ecofriendly microwave-assisted multi-component/one-pot protocol is designed for the synthesis of novel pyrazolo-[3,4-b]-quinolines at ambient temperature in aqueous ethanol as a reaction medium.

ChemInform Abstract: A One-Pot Three-Component Synthesis of Novel α-Sulfamidophosphonates under Ultrasound Irradiation and Catalyst-Free Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (37) ◽  
pp. no-no
Author(s):  
Billel Belhani ◽  
Malika Berredjem ◽  
Marc Le Borgne ◽  
Zouhair Bouaziz ◽  
Jacques Lebreton ◽  
...  
Keyword(s):  
Ultrasound Irradiation ◽  
One Pot ◽  
Catalyst Free

Green synthesis of five- and six-membered N-heterocycles by ultrasonic irradiation in aqueous media

2021 ◽  
Vol 08 ◽  
Author(s):  
Thais Cristina Mendonça Nogueiraa ◽  
Marcus Vinicius Nora de Souza
Keyword(s):  
Green Chemistry ◽  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Heterocyclic Compounds ◽  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
New Drugs ◽  
Environmentally Benign ◽  
Water Conditions ◽  
Synthetic Methodologies

: Five- and six-membered N-heterocyclic compounds play an important role in medicinal chemistry and in the development of new drugs. In this manner, there is a constant demand for the development of novel biologically potent compounds and there is also an increasing pressure to develop alternative and more sustainable synthetic methodologies following the Green Chemistry principles. Thus, the present review aims to compile the latest progress in the use of ultrasound irradiation in water conditions to mediate the synthesis of five- and six-membered N-heterocyclic compounds in an environmentally benign manner.

A green one-pot three-component synthesis of tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives using a Fe3O4@SiO2–imid–PMAn magnetic nanocatalyst under ultrasonic irradiation or reflux conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26625-26633 ◽  
Author(s):  
Mohsen Esmaeilpour ◽  
Jaber Javidi ◽  
Farzaneh Dehghani ◽  
Fatemeh Nowroozi Dodeji
Keyword(s):  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Magnetic Nanocatalyst ◽  
One Pot

Green synthesis of tetrahydrobenzo[b]pyran and dihydropyrano[3,2-c]chromene derivatives.

One-Pot, Three-Component Coupling Reaction: Catalyst-Free Green Synthesis of NovelN-Heteroaryl α-Naphthylglycines

2010 ◽  
Vol 40 (24) ◽  
pp. 3609-3617 ◽  
Author(s):  
Abolfazl Olyaei ◽  
Esmat Chehrehgosha Parashkuhi ◽  
Saeed Raoufmoghaddam ◽  
Mahdieh Sadeghpour
Keyword(s):  
Green Synthesis ◽  
Coupling Reaction ◽  
One Pot ◽  
Catalyst Free ◽  
Three Component Coupling
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