Journal of the Chemical SocietyThe Society., 1964 |
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Page 3706
... gave k25 6.7 x 10-5 and 6.0 × 10-5 1. mole1 sec . - 1 . A precisely similar solution was placed in the cell ( 1 cm . length ) of an Ericsson automatic polarimeter and the optical rotation was measured at intervals ; the temperature ...
... gave k25 6.7 x 10-5 and 6.0 × 10-5 1. mole1 sec . - 1 . A precisely similar solution was placed in the cell ( 1 cm . length ) of an Ericsson automatic polarimeter and the optical rotation was measured at intervals ; the temperature ...
Page 3778
... gave only a mono- Ph P 7 8 10 ᏢᏂ CH2 - C6H4 CH2 Ph 2X- As As Ph ( XX ) As Ph Ph ( XXI ) methiodide , in which , undoubtedly , the more reactive phosphine group had been quater- nised , with considerable deactivation of the arsine ...
... gave only a mono- Ph P 7 8 10 ᏢᏂ CH2 - C6H4 CH2 Ph 2X- As As Ph ( XX ) As Ph Ph ( XXI ) methiodide , in which , undoubtedly , the more reactive phosphine group had been quater- nised , with considerable deactivation of the arsine ...
Page 3834
... gave product melting only at 108—110 ° . Apparently the compound is polymorphic . Removal of the S - protection in the above fashion followed by aerial oxidation gave crystalline di ( benzyloxycarbonylglycyl ) -L - cystine in 78 % yield ...
... gave product melting only at 108—110 ° . Apparently the compound is polymorphic . Removal of the S - protection in the above fashion followed by aerial oxidation gave crystalline di ( benzyloxycarbonylglycyl ) -L - cystine in 78 % yield ...
Contents
4028 | 3507 |
Nucleophilic reactivity Part V The reaction between amines and ethyl meth | 3513 |
Molecular polarisability Dipole moments molar Kerr constants and apparent | 3523 |
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absorption acetic acid acetic anhydride acetone acetoxylation acetyl added alcohol alkaline alumina aluminium Amer amine atoms band benzene benzyl bond bromide Calc carbon carbonyl CH₂ chabazite Chem chloride chloroform chromatography cm.¹ compounds concentration crystals decomp derivatives diethyl diluted dimethylformamide diol dissolved distilled dried ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtrate formation Found fraction gave give heated hydrochloric acid hydrochloride hydrogen hydrolysis hydroxyl infrared iodide isomers K₁ ketone kinetic light petroleum lithium lithium aluminium hydride m. p. and mixed mixed m. p. mixture mole molecules needles nitrate nitric acid nitrogen o-xylene obtained optical oxide oxygen petroleum b. p. phenol picrate potassium precipitated prepared proton pyridine rate constants reaction recrystallised refluxed requires residue room temperature salt sodium hydroxide solvent spectra spectrum stirred structure substitution sulphuric acid Table values washed yield