Results 121 to 130 of about 3,427 (216)

STARCH SULFURIC ACID: AN ALTERNATIVE, ECO-FRIENDLY CATALYST FOR BIGINELLI REACTION [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2013
The one-pot multicomponent synthesis of 3,4-dihydropyrimidinone derivatives using starch sulfuric acid as an environmentally friendly biopolymer-based solid acid catalyst from aldehydes, β-keto esters and urea/ thiourea without solvent is described ...
Ramin Rezaei, Sara Malek, Mohammad Reza Sheikhi, Mohammad Kazem Mohammadi   +3 more
doaj  

Design, synthesis and biological Evaluation of novel chromones having 3,4-dihydropyrimidin-2(1H)-one core at C-8 in combination with triazoles: New α-glucosidase inhibitors and anti-bacterial agents

European Journal of Medicinal Chemistry Reports
The Biginelli reaction synthesizes dihydropyrimidones through a multi-component reaction. A β-ketoester, aldehyde, and urea or thiourea react in the presence of an acid catalyst to form these dihydropyrimidones.
Kumara Swamy Taviti, T.B. Patrudu, Nagalakshmi Jeedimalla, Naresh Kumar Katari, Satyanarayana Yatam, Rambabu Gundla   +5 more
doaj   +1 more source

'Πράσινη' μεθοδολογία σύνθεσης νέων προϊόντων δις-(β-δικαρβονυλο)-μεθανίου σε βαθέως ευτηκτικό διαλύτη (DES) [PDF]

, 2016
Vaitsis, Christos, Βαΐτσης, Χρήστος   +1 more
core   +1 more source

Методы синтеза и химические свойства бициклических бисмочевин (гликольурилов) [PDF]

, 2018
Разработка технологичного метода получения циклических амидов и предложение нового реагента для О-ацетилирования спиртовDevelopment of a technological method for the preparation of cyclic amides and sentence of a new reagent for O-acetylation of ...
Хоанг Нгок, Фыок
core  

Efficient sodium selenate-catalyzed synthesis of 3,4-dihydro-2(1H)-pyrimidinones and –thiones under solvent-free conditions

Bulletin of the Chemical Society of Ethiopia, 2009
Sodium selenate efficiently catalyzes the three-component Biginelli reaction of an aldehyde, a,β-keto ester and urea or thiourea under solvent-free conditions to afford the corresponding 3,4-dihydropyrimidin-2(1H)-ones or –thiones in excellent yields.
Rahim Hekmatshoar, Maryam Heidari, Majid M. Heravi, Bita Baghernejad   +3 more
doaj  

A microdroplet-accelerated Biginelli reaction: mechanisms and separation of isomers using IMS-MS. [PDF]

Chem Sci, 2019
Sahota N, AbuSalim DI, Wang ML, Brown CJ, Zhang Z, El-Baba TJ, Cook SP, Clemmer DE.   +7 more
europepmc   +1 more source

A comparative study between Cu(INA)₂-MOF and [Cu(INA)₂(H₂O)₄] complex for a click reaction and the Biginelli reaction under solvent-free conditions. [PDF]

RSC Adv, 2020
Mansano Willig JC, Granetto G, Reginato D, Dutra FR, Poruczinski ÉF, de Oliveira IM, Stefani HA, de Campos SD, de Campos ÉA, Manarin F, Botteselle GV.   +10 more
europepmc   +1 more source

Piperazine-grafted magnetic graphene oxide as a sustainable heterogeneous catalyst for solvent-free Biginelli reaction. [PDF]

RSC Adv
Rezaei-Seresht E, Jalambadani F, Cheshak S, Mahdavi B, Tafazzoli Gazkoh F.   +4 more
europepmc   +1 more source

Tuning the Biginelli reaction mechanism by the ionic liquid effect: the combined role of supported heteropolyacid derivatives and acidic strength. [PDF]

RSC Adv, 2019
Freitas EF, Souza RY, Passos STA, Dias JA, Dias SCL, Neto BAD.   +5 more
europepmc   +1 more source