Quarterly Journal of the Chemical Society of London, Volume 16, Pages 2739-3518 |
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Page 2975
... afforded 2 - chloro - 5 - methoxy - 3,6 - dimethylpyrazine ( 1.47 g . , 75 % ) , m.p. 64-65 ° ( Found : C , 48.7 ; H , 5 · 3 ; N , 16-0 . C , H , CIN2O requires C , 48-7 ; H , 5-2 ; N , 16.2 % ) . 3 2,5 - Dimethoxy - 3,6 ...
... afforded 2 - chloro - 5 - methoxy - 3,6 - dimethylpyrazine ( 1.47 g . , 75 % ) , m.p. 64-65 ° ( Found : C , 48.7 ; H , 5 · 3 ; N , 16-0 . C , H , CIN2O requires C , 48-7 ; H , 5-2 ; N , 16.2 % ) . 3 2,5 - Dimethoxy - 3,6 ...
Page 3058
... afforded the known cyclobutene ( XI ) .4 pound ( XIV ) . Use of 2 mol . equiv . of bromine gave mainly compound ( XV ) together with a small amount of ( XIV ) , and use of 3 mol . equiv . of bromine gave only In addition to compound ...
... afforded the known cyclobutene ( XI ) .4 pound ( XIV ) . Use of 2 mol . equiv . of bromine gave mainly compound ( XV ) together with a small amount of ( XIV ) , and use of 3 mol . equiv . of bromine gave only In addition to compound ...
Page 3119
... afforded 2-3 g of product shown by i.r. analysis to contain ( I ) and ( II ) . Further elution with ligroin afforded dodecacarbonyltri - iron and a trace of ( III ) ; further elution with ligroin - dichloromethane ( 4 : 1 ) afforded a ...
... afforded 2-3 g of product shown by i.r. analysis to contain ( I ) and ( II ) . Further elution with ligroin afforded dodecacarbonyltri - iron and a trace of ( III ) ; further elution with ligroin - dichloromethane ( 4 : 1 ) afforded a ...
Contents
Organic chemistry | 2739 |
Cyclic quaternary ammonium salts Part VIII Imidazo12apyrazinium salts | 2748 |
Reactions of pyridine Noxides with 36dichloropyridazine | 2756 |
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2-pyridyl acetic acid acetic anhydride acetone acetonitrile added adduct Amer amine anhydride aqueous aromatic azide benzene benzyl bromide Calc carbon CH₂ Chem Chemical chloride chloroform chromatographed cm¯¹ cm¹ CO₂H compound crystallised cyclisation decomp derivative dimethyl dimethylformamide distilled doublet dried elution ester ethanol ether ethyl acetate EtOH evaporated extracted filtered filtrate Found fraction gave give heated under reflux hydrazone hydride hydrochloric hydrogen hydrolysis hydroxide i.r. spectrum isolated ketone light petroleum lithium aluminium hydride mass spectra methyl methylene mixed m.p. mixture mmHg mmol mmoles N-oxide n.m.r. spectra needles nitrogen obtained oxidation petroleum b.p. Ph Ph phenol phosphite potassium prepared protons pyridine reaction reagent rearrangement requires residue ring room temperature signals silica gel sodium sodium hydroxide solid solution solvent stirred structure synthesis Tetrahedron triethyl phosphite washed yield