Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-1364 |
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Page 140
... dissolved in methanol ( 40 ml ) and the solution was stirred at room temperature overnight . The product was isolated as before and crystallisation from chloroform gave 4,5 - di- ( p - bromoanilino ) -1,2 - benzoquinone ( 0.35 g , m.p. > ...
... dissolved in methanol ( 40 ml ) and the solution was stirred at room temperature overnight . The product was isolated as before and crystallisation from chloroform gave 4,5 - di- ( p - bromoanilino ) -1,2 - benzoquinone ( 0.35 g , m.p. > ...
Page 498
... dissolved in methylene chloride ( 25 ml . ) and a few drops of a saturated solution of zinc acetate in methanol were added to it . After the mixture had been warmed on a steam - bath the visible spectrum showed zinc insertion to be ...
... dissolved in methylene chloride ( 25 ml . ) and a few drops of a saturated solution of zinc acetate in methanol were added to it . After the mixture had been warmed on a steam - bath the visible spectrum showed zinc insertion to be ...
Page 501
... dissolved in methylene chloride ( 5 ml . ) and added to sulphuric acid ( 1 % ) in methanol ( 23 ml . ) . After 3 min . solid potassium carbonate ( 5 g . ) followed by water ( 10 ml . ) and methylene chloride ( 10 ml . ) was added . The ...
... dissolved in methylene chloride ( 5 ml . ) and added to sulphuric acid ( 1 % ) in methanol ( 23 ml . ) . After 3 min . solid potassium carbonate ( 5 g . ) followed by water ( 10 ml . ) and methylene chloride ( 10 ml . ) was added . The ...
Contents
By K C BASS and G M TAYLOR | 1 |
ether 100 ml was added slowly to a stirred solution | 4 |
Oxidative dimerisations of natural rethrolones and related compounds with manganese dioxide | 9 |
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Common terms and phrases
1,2-Benzoquinone acetic acid acetone added adduct aldehyde Amer amine aqueous ethanol aromatic atom azine benzanilide benzene benzyl bromide Calc carbonyl CH₂ Chem chloride chloroform chromatography cm.¹ compound crystallised cyclisation decomp decomposition derivatives dilute dimer distillation dried eluted ester ethanol ethyl acetate EtOH evaporated extracted with ether filtered Found fraction gave give heated under reflux hydrazine hydride hydrochloride hydrogen chloride hydrolysis i.r. spectrum imine iodide isolated ketone light petroleum b.p. lithium aluminium hydride log ɛ Mannich base mass spectrum MeOH methyl methylene mixed m.p. mmHg mmoles mole n.m.r. spectrum needles nitrogen nucleophilic Nujol obtained oxidation phenyl potassium protons pyridine quinone reaction mixture requires residue room temperature salt Scheme showed silica gel sodium hydroxide solution solvent spectra starting material stirred Table Tetrahedron washed white solid yield