Synthesis of 2,6-diaminopyridine substituted 𝛼-oxoketene 𝑆,𝑁-acetals: Crystal structure and hydrogen bonding interactions

Journal of Chemical Sciences

Laishram Ronibala Devi¹  Neeladri Das2²  Okram Mukherjee Singh1¹ 

[1] Department of Chemistry, Manipur University, Canchipur 795 003, India$$;Department of Chemistry, Indian Institute of Technology Patna, Patna 800 013, India$$

关键词: Polyaza;    heterocycles;    conformation;    synthesis;    crystal structure.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown