Stereochemistry of the Oxime of N-Hydroxyimide of -Naphthol- Maleic Anhydride Adduct
| Main Authors: | ASHOK KUMAR SINGH, S. K. SRIVASTAVA |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1988
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6106160 |
Daftar Isi:
- Department of Chemistry, University of Roorkee, Roorkee-247 667 Manuscript received 8 February 1988, revised 27 May 1988, accepted 18 July 1988 LANTHANIDE reagents have been used in the stereochemical investigation of organic molecules1- 3 including aliphatic and alicyclic ketoximes4,5 . Anisotropy of the hydroxyimino group produces large chemical shift differences between syn- and anti-protous6 . The effect of anisotropy of oximido group is attributed7,8 to the hydroxyl group which deshields the neighbouring protons. In this study, an attempt has been made for the first time to determine stereochemistry of the oxime (1) of N-hydroxyimide of β-naphtholmaleic anhydride adduct by nmr study using Eu(DPM)3 as shift reagent. 1H nmr spectrum of 1 exhibited multiplets at δ 7.27 (4 X ArH), 4.17 (H-l), 3.90 (H-4), 3.40 (H-2 and H-3), 2.63 (H2-10) and a broad singlet at 3.87 for two hydroxyl protons.