On the Rearrangement of the Tautomeric Salts of 14 Diphenyl 5 Thionurazole An
On the Rearrangement of the Tautomeric Salts of 14 Diphenyl 5 Thionurazole An
Ernest Pohl Doetsch
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0859 3 . 1755 . 0603 Barium Salt of 1, 4-Diphenyl-5-thionurazole : To the sodium salt of l, 4-diphenyl-5-thionurazole was N-ester and O-ester !T- ester . 0824 . 0804 . 0470 . 0436 31 added an excess of 'barium hydroXide; the solution was then placed In ioe until all the barium salt had teen precipitated. The barium salt was then filtered out, washed with cold water and dried in the usual manner. Alkylation of Barium, 1. 4-Dlphenyl-5-thionurazole; Since the barium salt is insoluble in water no t...heoreti- cal yield of ester could be obtained. It was found, however, that the ratios of the two tautomeric modifications in the barium salt differed from those in the silver and sodium salts of l, 4-dlphenyl-5-thlonurazole. The following results were obtained: Hours. Amount Salt . Ester. ^ster not Hydrolyzed ^ ::0H: 11- ester and 6-ester. Ester not Eydrolyzed l^ester. 3/4 . 2986 . 0478 . 0407 . 0376 1 i/e . 4500 . 3213 . 2855 . 2787 32 Biography . Ernest Pohl Loetsch, the author of this dissertation, was 'born in Baltimore, Maryland, September 18, 1884.
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