Results 181 to 190 of about 9,657 (231)

Enantioselective Synthesis of Spirolactones and Spirolactams Under Low Catalyst Loadings. [PDF]

J Am Chem Soc
Saito T, Navarro A, Davies HML.
europepmc   +1 more source

Diastereoselective Cyclopropanation with Secondary Diazoacetamides to Access <i>endo</i>-Azabicyclo[3.1.0]hexane-6-carboxamides. [PDF]

Org Lett
Nguyen TH, Saito T, Chang W, Navarro A, Davies HML.   +4 more
europepmc   +1 more source

Green synthesis of diazo-pyrazole derivatives and their application as functional disperse dyes for dyeing polyester fabric. [PDF]

Sci Rep
Kafafy H, Hussien AM, Sayed GH, Mashaly H, Anwer KE.   +4 more
europepmc   +1 more source

Chemoenzymatic Triazolopyridine Synthesis Enabled by Cryptic Diazo Formation by Vanadium-Dependent Haloperoxidases. [PDF]

Org Lett
Sharma M, Biegasiewicz KF.
europepmc   +1 more source

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New Syntheses of Diazo Compounds

Angewandte Chemie - International Edition, 2009
AbstractDiazo compounds (R1R2CN2) are known as versatile and useful substrates for an array of chemical transformations and, therefore, diazo chemistry is still far from losing anything of its long‐standing fascination. In addition to many studies on the subsequent chemistry of the diazo group, the inventory of methods for the preparation of diazo ...
Gerhard Maas
exaly   +3 more sources

How Nucleophilic Are Diazo Compounds?

Chemistry - A European Journal, 2003
AbstractThe kinetics of the reactions of benzhydryl cations with eight diazo compounds 1 a–g were investigated photometrically in dichloromethane. The nucleophilicity parameters N and slope parameters s of these diazo compounds were derived from the equation log k (20 °C)=s (E+N) and compared with the nucleophilicities of other π systems (alkenes ...

exaly   +3 more sources

Reaction of Diazo Compounds with Organoboron Compounds

Synthesis, 2013
The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C, C–B, and C–Si bonds. Moreover, by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the boron substrates, this type of reaction becomes of practical
Jianbo Wang, Huan Li, Yan Zhang
openaire   +2 more sources

Homologation Reaction of Ketones with Diazo Compounds

Chemical Reviews, 2016
This review covers the addition of diazo compounds to ketones to afford homologated ketones, either in the presence or in the absence of promoters or catalysts. Reactions with diazoalkanes, aryldiazomethanes, trimethylsilyldiazomethane, α-diazo esters, and disubstituted diazo compounds are covered, commenting on the complex regiochemistry of the ...
Nuno R Candeias, Roberta Paterna, Pedro M P Gois   +2 more
exaly   +3 more sources

The Generation of Diazo Compounds in Continuous‐Flow

Chemistry - A European Journal, 2018
AbstractToxic, cancerogenic and explosive—these attributes are typically associated with diazo compounds. Nonetheless, diazo compounds are nowadays a highly demanded class of reagents for organic synthesis, yet the concerns with regards to safe and scalable transformations of these compounds are still exceptionally high.
Katharina J Hock, René M Koenigs
exaly   +3 more sources

Aliphatic diazo compounds

Tetrahedron, 1988
Abstract Reaction of α-diazo ketones,RCOCN2R', with boiling carbon disulfide can give two major types of product: 2-alkylidene-1,3-dithiolan-4-one derivatives (Type A) and 4-acyl-2-alkylidene-1,-3-dithetane derivatives (type B). When R' = phenyl and R = phenyl or methyl, type A but not type B products are formed.
Peter Yates, J.A. Eenkhorn
openaire   +1 more source