Results 71 to 80 of about 6,752 (176)

Compostos alfa-diazo carbonílicos: uma estratégia atraente para a síntese orgânica alpha-diazo carbonyl compounds: an atractive estrategy in organic synthesis

Química Nova, 2001
Diazocarbonyl compounds are a very important class of organic substances which have a long history of useful aplications in organic chemistry. The focus of this report deals with the use of diazocarbonyl compounds in a ariety of important reactions and ...
Vítor F. Ferreira, Letícia O. R. Pereira, Maria Cecília B. V. de Souza, Anna C. Cunha   +3 more
doaj   +1 more source

Rh(III)-Catalyzed Double Annulation of 3-Phenyl-1,2,4-oxadiazoles with 2-Diazo-1,3-diketones: Access to Pyran-Fused Isoquinolines

Molecules
Efficient access to pyranoisoquinoline derivatives via rhodium-catalyzed double C-H functionalization of phenyl oxadiazoles and diazo compounds has been developed.
Enshen Zhang, Mei Sun, Lvlv Gao
doaj   +1 more source

Recent advances in C(sp3)–H bond functionalization via metal–carbene insertions

Beilstein Journal of Organic Chemistry, 2016
The recent development of intermolecular C–H insertion in the application of C(sp3)–H bond functionalizations, especially for light alkanes, is reviewed.
Bo Wang, Di Qiu, Yan Zhang, Jianbo Wang
doaj   +1 more source

Protocol for aqueous synthesis of bioactive quaternary ammonium betaine derivatives under blue LED

STAR Protocols
Summary: Quaternary ammonium compounds exhibit diverse applications as antibiotics, as surfactants, in paper industries, in sewage treatment, and in aquaculture.
Suchismita Rath, Subhabrata Sen
doaj   +1 more source

Rh(II)-mediated domino [4 + 1]-annulation of α-cyanothioacetamides using diazoesters: A new entry for the synthesis of multisubstituted thiophenes

Beilstein Journal of Organic Chemistry, 2017
A new approach towards the synthesis of multisubstituted thiophenes is elaborated based on Rh(II)-catalyzed domino reactions of acyclic diazoesters with α-cyanothioacetamides.
Jury J. Medvedev, Ilya V. Efimov, Yuri M. Shafran, Vitaliy V. Suslonov, Vasiliy A. Bakulev, Valerij A. Nikolaev   +5 more
doaj   +1 more source

Imine Directed Cp*Rh^III -Catalyzed N-H Functionalization and Annulation with Amino Amides, Aldehydes, and Diazo Compounds. [PDF]

Angew Chem Int Ed Engl, 2023
Zoll AJ, Molas JC, Mercado BQ, Ellman JA.   +3 more
europepmc   +1 more source

Asymmetric Donor–Acceptor 2,7-Disubstituted Fluorenes and Their 9-Diazoderivatives: Synthesis, Optical Spectra and Photolysis

Molecules
In a search for dyes photoactivatable with visible light, fluorenes with substituents at positions 2 and 7 were prepared, and their absorption and emission spectra were studied.
Andrei I. Savchenko, Vladimir N. Belov, Mariano L. Bossi, Stefan W. Hell   +3 more
doaj   +1 more source

SuFExable NH-Pyrazoles via 1,3-Dipolar Cycloadditions of Diazo Compounds with Bromoethenylsulfonyl Fluoride. [PDF]

J Org Chem, 2022
Yamanushkin P, Kaya K, Feliciano MAM, Gold B.   +3 more
europepmc   +1 more source

B(C₆F₅)₃-Catalyzed Diastereoselective and Divergent Reactions of Vinyldiazo Esters with Nitrones: Synthesis of Highly Functionalized Diazo Compounds. [PDF]

Org Lett, 2023
Stefkova K, Guerzoni MG, van Ingen Y, Richards E, Melen RL.   +4 more
europepmc   +1 more source

Cobalt Diazo-Compounds: From Nitrilimide to Isocyanoamide via a Diazomethanediide Fleeting Intermediate. [PDF]

Angew Chem Int Ed Engl, 2021
Aghazada S, Fehn D, Heinemann FW, Munz D, Meyer K.   +4 more
europepmc   +1 more source