What people are saying - Write a review
We haven't found any reviews in the usual places.
DISCUSSION OP THIS INVESTIGATION
Attempted Preparation of 7Butyl8thioll3
Structure Proof of 2Alkylamino46dimethyl
5 other sections not shown
1,3,9-trimethylisoxanthine 8-thiol-l,3,9-trimethylisoxanthine 9-methyl 9-substituted xanthines A. H. Cook acetic acid acetic anhydride allyl Anal aqueous B-purines benzene benzyl butyl Calcd CH3N Chem chloroform CM CM CM CNH2 compound 20 compound XXVII compounds of type concentrated hydrochloric acid derivative described diamine dissolved diuretic diuretic activity ester ethanol ethanol and ether ethylene sulfide evaporated to dryness filtrate H H H H rH H. C. Godt heated HN CO HN hydrochloric acid incl isolated isomer isopropyl isothiocyanate method methyl iodide methyl isocyanate methylisoxanthine mole monohydrate nitrous acid o-phenylenediamine obtained OC C NH P. P. Blicke paraxanthines potassium hydroxide potassium hydroxide solution Pound procedure purine pyrimidine Raney nickel reaction mixture Reaction Scheme recrystallized refluxed reported residue rH CM rH H rH rH rH sodium hydroxide spectra stirred structure synthesis Table theophylline thiazolo thiazolopyrimidines thioether tion treated treatment uracil xanthine xanthosine XIIa