Rearrangement of 2-azanorbornenes to tetrahydrocyclopenta[c]pyridines under the action of activated alkynes – A short pathway for construction of the altemicidin core

CRYSTAL STRUCTURE OF (E)-N′-((1H-PYRROL-2-YL)METHYLENE)-4-HYDROXYBENZOHYDRAZIDE

“…Weak interactions, such as hydrogen, halogen, chalcogen, pnicogen, tetrel and picosagen bonds were extensively used in the synthesis, catalysis, crystal engineering, drug delivery, etc. [1][2][3][4][5][6][7][8][9][10][11] . Among those, hydrogen bonding has turned out to be particularly suitable for design of organic and coordination compounds [12][13][14][15][16][17][18][19] .…”

Crystal structure and Hirshfeld surface analysis of 3,3′,3′′-[(1,3,5-triazine-2,4,6-triyl)tris(oxy)]tris(5,5-dimethylcyclohex-2-en-1-one)

“…Usually, the active methylene group of -diketones is a reaction centre in the organic transformations of this class of compounds (Ma et al, 2017a,b;Gurbanov et al, 2017aGurbanov et al, ,b, 2018Borisova et al, 2018;Jlassi et al, 2018). In contrast, there are few reports on the reactivity of -diketones as O-nucleophiles (Yusifov et al, 2013;Ledenyova et al, 2018;Vandyshev et al, 2017;Nasirova et al, 2017). Herein we found a C-O coupling reaction between cyanuric chloride and dimedone leading to the title compound 3,3 0 ,3 00 -[(1,3,5-triazine-2,4,6-triyl)tris(oxy)]tris(5,5-dimethylcyclohex-2-en-1-one) ( Fig.…”

Crystal structure and Hirshfeld surface analysis of ethane-1,2-diaminium 3-[2-(1,3-dioxo-1,3-diphenylpropan-2-ylidene)hydrazinyl]-5-nitro-2-oxidobenzenesulfonate dihydrate

“…Arylhydrazones of -diketones (AHBD) and their complexes have attracted much attention due to their synthetic potential for organic and inorganic chemistries and diverse useful properties (Gurbanov et al, 2017a,b;Jlassi et al, 2014Jlassi et al, , 2018Ma et al, 2017a,b;Mahmudov & Pombeiro, 2016;Mahmudov et al, 2014Mahmudov et al, , 2017a. Usually, AHBDs have strong intramolecular resonance-assisted hydrogen bonding (RAHB), which has a more profound effect on their reactivity (Mahmudov et al, 2016) than regular hydrogen bonding and other types of noncovalent interactions (Ledenyova et al, 2018;Mahmoudi et al, 2016Mahmoudi et al, , 2018Nasirova et al, 2017;Politzer et al, 2017;Scheiner, 2013;Shixaliyev et al, 2018;Vandyshev et al, 2017).…”