The Horner-Wadsworth-Emmons modification of the Wittig reaction using triethylamine and lithium or magnesium salts

A variety of aldehydes were converted into the corresponding α,β-unsaturated esters using triethyl phosphonoacetate and triethylamine in the presence of ...

MW Rathke，M Nowak - 《Journal of Organic Chemistry》

Procedures for the acylation of diethyl malonate and ethyl acetoacetate with acid chlorides using tertiary amine bases and magnesium chloride

No abstract is available for this article.

MW Rathke，PJ Cowan - 《Chemischer Informationsdienst》

Selective reactions between phenols and formaldehyde. A novel route to salicylaldehydes

Treatment of phenols (1) with 2 mol equiv. of paraformaldehyde in aprotic and poorly electron-donating solvents in the presence of selected metal halides c...

Giovanni，Casiraghi，Giuseppe，... - 《Journal of the Chemical Society》

Magnesium-mediated ortho-specific formylation and formaldoximation of phenols

Deprotonation of phenols using magnesium methoxide, followed by distillative removal of free methanol and addition of paraformaldehyde results in ortho-spe...

R Aldred，R Johnston，D Levin，... - 《Journal of the Chemical Society Perkin Transactions》

NMR spectra of intramolecularly hydrogen-bonded compound—I

The \\{NMR\\} spectra of a series of β-diketones, o-hydroxyaldehydes, and o-hydroxyketones have been measured. The influence of steric and electronic effects on the position of the enolic signal and hence on the strength of the intramol...

DC Nonhebel - 《Tetrahedron》

A Convenient Procedure for Carboxylation—Robinson Annulations of Ketones Using Triethylamine Base in the Presence of Magnesium Chloride

Carboxylation of ketones with carbon dioxide in the presence of magnesium chloride and triethylamine followed by reaction with methyl vinyl ketone gives sa...

Richard，S.，Olsen，... - 《Synthetic Communications》

New Reaction Mode of the Dieckmann-Type Cyclization under the Lewis Acid-Et 3 N Conditions

Dieckmann-type cyclization reactions of various dicarboxylic acid derivatives were readily promoted by employing Lewis acids such as AlCl3, MgBr2, MgCl2, and Sn(OSO2CF3)2 in the presence of Et3N or N-ethylpiperidine. The cyclization reac...

S Tamai，H Ushirogochi，S Sano，... - 《Chemistry Letters》

Magnesium chloride catalysed acylation reaction

An efficient and practical preparation of methyl ketones, via a magnesium chloride catalysed acylation reaction of dimethyl malonate with acid chlorides in the presence of tertiary base and followed by a decarbmethoxylation reaction, is ...

DL Kuo - 《Tetrahedron》

Synthesis of β-Keto Acids and Methyl Ketones Using Bis(trimethylsilyl) Malonate and Triethylamine in the Presence of Lithium or Magnesium Halides

Bis(trimethylsilyl) malonate is acylated in good yields with acid chlorides and acyl carbonates using triethylamine and magnesium or lithium salts to give ...

MW Rathke，MA Nowak - 《Cheminform》

Intramolecular catalysis in the hydrolysis of glycosides and acetals

The hydrolyses of 2-carboxyphenyl β-D-glucoside, 2-carboxyphenyl α-D-glucoside, 2-methoxymethoxybenzoic acid, and 8-methoxymethoxy-1-naphthoic acid follow kinetic laws of the form Rate =kobs[total substrate]=k1[un-ionised form]+k2[un-i...

B Capon，MC Smith，E Anderson，... - 《Journal of the Chemical Society B Physical Organic》