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Synthesis of 2,6-diaminopyridine substituted 𝛼-oxoketene 𝑆,𝑁-acetals: Crystal structure and hydrogen bonding interactions
Okram Mukherjee Singh Laishram Ronibala Devi Neeladri Das
Volume 125 Issue 5 September 2013 pp 1103-1107
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https://www.ias.ac.in/article/fulltext/jcsc/125/05/1103-1107 -
Keywords
Polyaza ;heterocycles ;conformation ;synthesis ;crystal structure. -
Abstract
Polyaza 𝛼-oxoketene 𝑆,𝑁-acetals can exist as either enamino or imino tautomeric forms. Based on the spectroscopic data and structural analysis of one of the 𝑆,𝑁-acetals, the stereochemistry was unambiguously assigned as an all-𝐸-configuration. The crystal structure confirms the enamino structure and shows extensive use of C-H…X (X = N, O, and S) weak hydrogen bonding interactions, thereby generating a 3-dimensional network in solid state.
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Author Affiliations
Okram Mukherjee Singh1 Laishram Ronibala Devi1 Neeladri Das2
- Department of Chemistry, Manipur University, Canchipur 795 003, India
- Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, India
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Dates
- Published
- September 2013
- Manuscript received
- 15 August 2012
- Manuscript revised
- 19 March 2013
- Accepted
- 4 July 2013
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Supplementary Material
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Journal of Chemical Sciences
Volume 133, 2021
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