Journal of the Chemical SocietyThe Society., 1947 |
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Page 1192
... formation of these dyes is interesting . It appears that the initial step of pyrrole ring formation occurs on warming in alcohol ; the 2 - ethoxy - 5 - phenylpyrrole hydro- chloride ( XII ) thus formed probably decomposes rapidly to ...
... formation of these dyes is interesting . It appears that the initial step of pyrrole ring formation occurs on warming in alcohol ; the 2 - ethoxy - 5 - phenylpyrrole hydro- chloride ( XII ) thus formed probably decomposes rapidly to ...
Page 1195
... formed colourless needles , m . p . 130 ° , in 60 % yield after recrystallisation from cold ethyl alcohol - ether . The yield was not improved by keeping the reaction temperature below 10 ° ( Found : C , 58.95 ; H , 6-7 ; N , 5 · 95 ...
... formed colourless needles , m . p . 130 ° , in 60 % yield after recrystallisation from cold ethyl alcohol - ether . The yield was not improved by keeping the reaction temperature below 10 ° ( Found : C , 58.95 ; H , 6-7 ; N , 5 · 95 ...
Page 1658
... formed pink tablets , m . p . 216 ° ( decomp . ) , from alcohol ( Found : S , 14-45 . C1 , H , O , NS requires S , 14-65 % ) . Ethyl 2 - Amino - 4 - phenylthiazole - 5 - carboxylate . - This , obtained similarly from ethyl a ...
... formed pink tablets , m . p . 216 ° ( decomp . ) , from alcohol ( Found : S , 14-45 . C1 , H , O , NS requires S , 14-65 % ) . Ethyl 2 - Amino - 4 - phenylthiazole - 5 - carboxylate . - This , obtained similarly from ethyl a ...
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Common terms and phrases
absorption acetic acid acetone activity added addition alkali Amer amidine ammonia anhydride atoms band benzene boiling bromine Calc carbon carbon tetrachloride catalyst CH₂ Chem chemical chemistry chloroform compound concentrated condensation cooled crystallised crystals cyanide D.Sc decomp derivatives dilute dissolved distilled dried equiv ester evaporated experimental extracted with ether filtered filtrate formation formed Found fraction gave give H₂ heated hydrochloric acid hydrochloride hydrogen chloride hydrolysis iodide iodine isolated isotherm ketone l-arabinose lactone light petroleum b. p. liquid m. p. and mixed methanol method methyl alcohol mixed m. p. mixture molecular molecule nitration obtained oxide oxidised phenyl phosphoryl chloride picrate polymerisation potassium precipitated prepared pyridine reaction reduced pressure refluxed removed requires residue salt separated sodium hydroxide solid soluble solvent stirred structure sulphate sulphuric acid syrup vacuum vinyl acetate washed yellow yield