Results 51 to 60 of about 128 (98)

Innovative Syntheses and Reactivity of Propiolamidines

Molecules
Polydentate ligands with nitrogen donor atoms have possibly given rise to the largest group of coordination complexes described. Among these ligands, amidinates represent a nitrogenated version of carboxylates and allow the formation of complexes with ...
Carlos Ginés, Blanca Parra-Cadenas, Fernando Carrillo-Hermosilla, David Elorriaga   +3 more
doaj   +1 more source

Synthesis and Spectral Analysis of 3,4,5-trichloro-6-(dibenzo[d,f][1,3]diazepin-5-yl)-[1,2]-benzoquinones

E-Journal of Chemistry, 2011
Reaction of N1,N2-di-(4-methoxyphenyl)- or N1,N2-di-(4-hydroxyphenyl) -amidines (1a-d) with 3,4,5,6-tetrachloro-1,2-benzoquinone (2) in ethyl acetate at room temperature led to formation of new 3,4,5-trichloro-6-(2-hydroxy-6-methyldibenzo[d,f][1,3 ...
Mohsen A. M. Gomaa
doaj   +1 more source

Multicomponent Synthesis of 3,6-Dihydro-2H-1,3-thiazine-2-thiones

Molecules, 2012
Non-fused 3,6-dihydro-2H-1,3-thiazine-2-thiones constitute a so far rather unexplored class of compounds, with the latest report dating back more than two decades.
Frans J. J. de Kanter, Eelco Ruijter, Romano V. A. Orru, Madeleine Helliwell, Elwin Janssen, Marten L. Ploeger, Art Kruithof   +6 more
doaj   +1 more source

3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten

CHIMIA, 1979
3-Amino-2H-azirines, cyclic three-membered amidines with an estimated ring strain of about 200 kJ/mole, undergo a variety of reactions. Thereby, each of the azirine bonds can be broken: Thermolysis leads to the rupture of the C(2),C(3)-bond, with strong
Heinz Heimgartner
doaj   +1 more source

Chitosan-supported CuI-catalyzed cascade reaction of 2-halobenzoic acids and amidines for the synthesis of quinazolinones

Beilstein Journal of Organic Chemistry
A chitosan-supported CuI (CS@CuI) catalyst was developed for the synthesis of quinazolinones from 2-halobenzoic acids (including iodine and bromine) and amidines. The reaction proceeds under mild reaction conditions, demonstrating a broad substrate scope
Xuhong Zhao, Weishuang Li, Mengli Yang, Bojie Li, Yaoyao Zhang, Lizhen Huang, Lei Zhu   +6 more
doaj   +1 more source

The Groebke–Blackburn–Bienaymé reaction in its maturity: innovation and improvements since its 21st birthday (2019–2023)

Beilstein Journal of Organic Chemistry
The Groebke–Blackburn–Bienaymé (GBB) three-component reaction, discovered in 1998, is a very efficient strategy to assemble imidazo[1,2-a]-heterocycles starting from amidines, aldehydes and isocyanides.
Cristina Martini, Muhammad Idham Darussalam Mardjan, Andrea Basso   +2 more
doaj   +1 more source

KF/Al2O3: As a Solid Phase and Recyclable Basic Catalyst for Synthesis Mono and Bis Pyrimidine Derivatives [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
KF/Al2O3 as a green and efficient catalyst has been used for the synthesis of mono and bis pyrimidine derivatives via three-component reaction of amidines, malononitrile, and aldehydes in EtOH at reflux.
Mehdi Abaszadeh, Mohammad Seifi
doaj  

The inhibition of histaminase by amidines [PDF]

Biochemical Journal, 1951
F. N. Fastier, H. Blaschko, Isabelle Wajda   +2 more
openaire   +3 more sources

Transesterification of vegetable oils: a review

Journal of the Brazilian Chemical Society, 1998
The transesterification of vegetable oils with methanol as well as the main uses of the fatty acid methyl esters are reviewed. The general aspects of this process and the applicability of different types of catalysts (acids, alkaline metal hydroxides ...
Schuchardt Ulf, Sercheli Ricardo, Vargas Rogério Matheus   +2 more
doaj  

Bonding of amidine ligands [PDF]

Acta Crystallographica Section A Foundations of Crystallography, 1981
S. C. Wallwork, N. Cameron, M. M. Mahmoud, M. Kilner   +3 more
openaire   +2 more sources