Patil R, Jadhav M, Salunke-Gawali S, Lande DN, Gejji SP, Chakravarty D.
1H and
13C NMR chemical shifts of 2-
n-alkylamino-naphthalene-1,4-diones.
Heliyon 2021;
7:e06044. [PMID:
33553738 PMCID:
PMC7848645 DOI:
10.1016/j.heliyon.2021.e06044]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/29/2020] [Accepted: 01/18/2021] [Indexed: 10/25/2022] Open
Abstract
1H as well as 13C chemical shifts of 32 compounds of C (3) substituted 2-(n-alkylamino)-3R-naphthalene-1,4-dione (where n-alkyl: methyl, to octyl, R = H, Cl, Br, and CH3) are investigated through 1H, 13C, DEPT, gDQCOSY, and gHSQCAD NMR experiments and M06-2X/6-311++G (d,p) density functional theory are discussed. Single crystal X-ray structure of Br-3, as well as 18 different derivatives of naphthalene-1,4-diones, are revealed for its inter and intra-molecular hydrogen bonding interactions.
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