Results 21 to 30 of about 93,015 (287)

Stereoselective protecting group free synthesis of d,l-gulose ethyl glycoside via multicomponent enyne cross metathesis—hetero Diels–Alder reaction [PDF]

open access: yes, 2009
An efficient and stereoselective synthesis of d,l-gulose was described. The key step of the synthetic route is represented by a multicomponent enyne cross metathesis—hetero Diels–Alder reaction which allows the formation of the pyran ring from cheap and ...
Aoyagi   +22 more
core   +1 more source

Atom- and step-economic synthesis of biaryl-substituted furocoumarins, furoquinolones and furopyrimidines by multicomponent reactions and one-pot synthesis

open access: yesGreen Processing and Synthesis, 2013
Atom-efficient multicomponent reactions (MCR) and step-efficient one-pot synthesis are developed for the synthesis of biaryl-substituted furocoumarins, furoquinolones, and furopyrimidines.
Kadam Asha   +2 more
doaj   +1 more source

Ethyl 5-methyl-7-(4-morpholinophenyl)-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate

open access: yesMolbank, 2018
A new compound belonging to a dihydrotetrazolopyrimidine derivative, that is, ethyl 5-methyl-7-(4-morpholinophenyl)-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate, was successfully synthesized using a Biginelli reaction between 4 ...
Hery Suwito   +4 more
doaj   +1 more source

The HPx software for multicomponent reactive transport during variably-saturated flow: Recent developments and applications [PDF]

open access: yes, 2018
HPx is a multicomponent reactive transport model which uses HYDRUS as the flow and transport solver and PHREEQC-3 as the biogeochemical solver.
Jacques, Diederik   +3 more
core   +2 more sources

Efficient Synthesis of Boron-Containing α-Acyloxyamide Analogs via Microwave Irradiation

open access: yesMolecules, 2013
In this report, a Passerini three-component reaction utilizing boron-containing carboxylic acids or aldehydes is discussed. The reaction was carried out in water and facilitated by the use of microwave irradiation.
Po-Shen Pan   +6 more
doaj   +1 more source

Chemistry and Biology Of Multicomponent Reactions [PDF]

open access: yesChemical Reviews, 2012
Multicomponent reactions (MCRs) are one-pot reactions employing more than two starting materials, e.g. 3, 4, … 7, where most of the atoms of the starting materials are incorporated in the final product.1 Several descriptive tags are regularly attached to MCRs (Fig. 1): they are atom economic, e.g.
Alexander, Dömling   +2 more
openaire   +2 more sources

Bio-Catalysis in Multicomponent Reactions [PDF]

open access: yesMolecules, 2020
Enzyme catalysis is a very active research area in organic chemistry, because biocatalysts are compatible with and can be adjusted to many reaction conditions, as well as substrates. Their integration in multicomponent reactions (MCRs) allows for simple protocols to be implemented in the diversity-oriented synthesis of complex molecules in chemo ...
Ndze Denis Jumbam, Wayiza Masamba
openaire   +3 more sources

Diastereoselective three-component synthesis of beta-amino carbonyl compounds using diazo compounds, boranes, and acyl imines under catalyst-free conditions [PDF]

open access: yes, 2014
Diazo compounds, boranes, and acyl imines undergo a three-component Mannich condensation reaction under catalyst-free conditions to give the anti β-amino carbonyl compounds in high diastereoselectivity.
Luan, Yi   +4 more
core   +1 more source

Tetrazoles via Multicomponent Reactions [PDF]

open access: yesChemical Reviews, 2019
Tetrazole derivatives are a prime class of heterocycles, very important to medicinal chemistry and drug design due to not only their bioisosterism to carboxylic acid and amide moieties but also to their metabolic stability and other beneficial physicochemical properties.
Constantinos G. Neochoritis   +2 more
openaire   +3 more sources

Divergent Synthesis of Novel Five-Membered Heterocyclic Compounds by Base-Mediated Rearrangement of Acrylamides Derived from a Novel Isocyanide-Based Multicomponent Reaction

open access: yesMolecules, 2011
We have recently reported a novel multicomponent reaction between arylacetic acids and isocyanides, affording α-acyloxyacrylamides through an unusual mechanism.
Renata Riva, Andrea Basso, Luca Banfi
doaj   +1 more source

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