Results 151 to 160 of about 1,953 (199)

2‐Phenacylbenzothiazole in the Biginelli Reaction.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
I. B. Dzvinchuk, T. V. Makitruk, M. O. Lozinskii   +2 more
openaire   +1 more source

An Inexpensive Protocol for Biginelli Reaction

Synthetic Communications, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
A. Manjula, B. Vittal Rao, Parvathi Neelakantan   +2 more
openaire   +1 more source

Aminoheterocycles as synthons for combinatorial Biginelli reactions

Molecular Diversity, 2010
Chlorotrimethylsilane (TMSCl) has been utilized as an efficient promoter and water scavenger in the synthesis of diverse dihydropyrimidines via Biginelli type MCR-heterocyclization using aminoheterocycles. High yields and a simple workup of target compounds enable the facile generation of combinatorial libraries comprising more than 2,000 compounds of ...
Sergey V, Ryabukhin, Andrey S, Plaskon, Sergey Yu, Boron, Dmitriy M, Volochnyuk, Andrey A, Tolmachev   +4 more
openaire   +2 more sources

Recent progress in asymmetric Biginelli reaction

Molecular Diversity, 2013
The Biginelli reaction, which involves the interaction of ethyl acetoacetate, urea, and an appropriate aryl aldehyde, was first discovered by Pietro Biginelli about 120 years ago. The Biginelli products (3,4-dihydropyrimidin-2(1H)-ones) are interesting materials due to their significant pharmacological and structural profiles.
Majid M, Heravi, Shima, Asadi, Boshra Malekzadeh, Lashkariani   +2 more
openaire   +2 more sources

Tandem Hydroformylation-Biginelli Reaction

Synlett, 2013
The combination of a tandem process with a multicomponent reaction is a new approach to high atom-economic synthesis. A tandem hydroformylation–Biginelli reaction sequence has been developed leading to a variety of functionalized 4-alkyl-substituted 3,4-dihydropyrimidin-2(1H)-ones.
Fuchs, Daniela, Nasr-Esfahani, Mahboobeh, Diab, Lisa, Smejkal, Tomas, Breit, Bernhard   +4 more
openaire   +2 more sources

Organosilane sulfonated graphene oxide in the Biginelli and Biginelli-like reactions

New Journal of Chemistry, 2016
The acid functionalized SSi-GO was used as a highly active, selective and reusable catalyst to improve the formation of pyrimidinones.
Javad Safari, Soheila Gandomi-Ravandi, Samira Ashiri   +2 more
openaire   +1 more source

The Biginelli Reaction

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +1 more source

Biginelli Reaction: A Green Perspective

Current Organic Chemistry, 2012
The Biginelli Reaction is a one-pot acid catalysed cyclocondensation of -keto ester, urea and aromatic aldehyde which leads to the synthesis of functionalised 3,4-dihydro-2(H)-pyrimidinones (DHPMs). This three-component reaction for the synthesis of dihydro- pyrimidinone and corresponding dihydropyrimidinethiones has now been known for more than a ...
Siva S. Panda, Pankaj Khanna, Leena Khanna   +2 more
openaire   +1 more source

New catalysts of Biginelli reaction

Russian Journal of Organic Chemistry, 2007
A synthesis was developed of new imidazole derivatives catalyzing three-component condensation of ethyl acetoacetate, aromatic aldehydes, and urea(or thiourea) by Biginelli reaction.
F. Makaev, E. Styngach, V. Muntyanu, S. Pogrebnoi, Z. Rybkovskaya, A. Barba   +5 more
openaire   +1 more source

2-Acylthioacetamides in the Biginelli Reaction

Chemistry of Heterocyclic Compounds, 2014
We have demonstrated for the first time a Biginelli reaction of 2-acylthioacetamides with aromatic aldehydes and ureas or thioureas, leading to N-Ar1-4-Ar2-6-R1-1-R2-2-oxo(thioxo)-1,2,3,4-tetrahydro-pyrimidine-5-carbothioamides. The regioselectivity of this process matched the concept of hard/soft Lewis acids and bases.
M. N. Kurmach, A. B. Ryabitskiy, V. N. Britsun   +2 more
openaire   +1 more source