14 N chemical shifts in the enamino ketone quaternary ammonium salts | Zendy

Dąbrowski Janusz | Zendy; Kamieńskatrela Krystyna | Zendy; Sadlej Andrzej J. | Zendy

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14 N chemical shifts in the enamino ketone quaternary ammonium salts

Author(s) -

Dąbrowski Janusz,

Kamieńskatrela Krystyna,

Sadlej Andrzej J.

Publication year - 1971

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270030514

Subject(s) - ammonium , interpretation (philosophy) , chemical shift , ketone , electromagnetic shielding , quaternary , chemistry , series (stratigraphy) , nuclear magnetic resonance , organic chemistry , physics , quantum mechanics , philosophy , paleontology , linguistics , biology

The 14 N chemical shifts were measured for a series of quaternary ammonium salts of enamino ketones. An upfield shift of the 14 N resonance signals upon quaternization has been observed. The interpretation in terms of the approximate theory of nuclear magnetic shielding is given. The calculations for some model systems result in a general agreement with the experimental data.

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