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/v7sp5.2

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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/v7sp5.2

Year: 2020, Volume: 7, Issue: Supplementary 5, Pages: 20-21

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

Chemistry, Bharath University, Selaiyur, Chennai – 600 073, Tamil Nadu, India

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 ,were prepared ; Using Schmidt reaction , the compound was prepared. Then taking their solution 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’s and Karplus , for different torsional angles from 0 to 1800 . 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, Benzaldehyde , Ammonia, Stirring , Drop-wise, Extract, Anhydrous, Crush, Melting Point, Petroleum Ether