NMR Spectral Studies of Some Six–membered and Seven–membered Saturated Hetero Cyclic Compounds and Preparation of Some Seven– membered Saturated Hetero Cyclic Compounds and NMR Measurements

V  Krishnasamy  and S  Rosy Christy

doi:10.17485/ijst/2014/v7sp3.12

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NMR Spectral Studies of Some Six–membered and Seven–membered Saturated Hetero Cyclic Compounds and Preparation of Some Seven– membered Saturated Hetero Cyclic Compounds and NMR Measurements

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2014/v7sp3.12

Year: 2020, Volume: 7, Issue: Supplementary 3, Pages: 67–68

Original Article

NMR Spectral Studies of Some Six–membered and Seven–membered Saturated Hetero Cyclic Compounds and Preparation of Some Seven– membered Saturated Hetero Cyclic Compounds and NMR Measurements

V. Krishnasamy* and S. Rosy Christy

Bharath University, Selaiyur, Chennai – 600 073, Tamil Nadu, India; nadippi@gmail.com, rosyma28@yahoo.in

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

t[3] – Isopropyl -r[2],c[7]- diphenyl homopiperazin – 5 – one, was prepared using Schmidt reaction. Then, taking the solution of the compound in a suitable solvent, NMR measurements were taken. The chemical shifts were compared with those in CDCl3 . The COSY, NOESY and 13C-1 H correlation spectra had been recorded to assign the signals unambiguously. Coupling constants were calculated using DAERM method and also using the equations of Altona and Karplus for different torsional angles from 0 to 180°. The coupling constants, calculated by Altona’s equation were less than those obtained by Karplus equation for some compounds for a particular range of torsional angles and greater for other range of torsional angles; hence, both Karplus and Altona’s equations can be applied to these compounds satisfactorily. .

Keywords: Ammonium Acetate, Ammonia, Anhydrous, Benzaldehyde, Crush, Drop-wise, Extract, Melting Point, Petroleum Ether, Stirring