Crystal structure of 5′′-benzylidene-1′-methyl-4′-phenyltrispiro[acenaphthylene-1,2′-pyrrolidine-3′,1′′-cyclohexane-3′′,2′′′-[1,3]dioxane]-2,6′′-dione

Abstract

In the title tris­piro compound, both the methyl-substituted pyrrolidine and dioxalane rings adopt a twist conformation. The cyclo­penta­none ring of the acenapthylen-1-one system adopts flattened envelope conformation, and the cyclo­hexa­none attached to the dioxalane ring adopts boat conformation. In the crystal, centrosymmetrically related mol­ecules are linked into dimers forming rings of (10) graph-set motif, which are further connected into chains parallel to the b axis by C—H⋯O contacts forming rings of (8) graph-set motif.

5′-Benzylidene-1′′-methyl-4′′-phenyltrispiro[1,3-dioxolane-2,1′-cyclohexane-3′,3′′-pyrrolidine-2′′,3′′′-indole]-4′,2′′′-dione

“…intramolecular C-HÁ Á ÁO hydrogen bond occurs. The geometrical parameters of the title compound are in good agreement with those previously reported for trispiropyrrolidine compounds (Chandralekha et al, 2015(Chandralekha et al, , 2016. In the crystal, molecules are linked by weak C-HÁ Á ÁO and N-HÁ Á ÁO interactions (Table 1), forming chains extending along the b-axis direction (Fig.…”

Synthesis and crystal structure of 2-(1,3-dithietan-2-ylidene)cyclohexane-1,3-dione

“…1). The cyclohexane-1,3-dione ring adopts a twist-boat conformation, as seen in related compounds (Kuppan Chandralekha et al, 2016;Liu et al, 2011). Atom C5 is displaced by 0.627 (8) A ˚with respect to the C2/C3/C4/C6/C7 mean plane, similar to the value observed for 2-[chloro(4-methoxyphenyl)methyl]-2-(4-methoxyphenyl)-5,5-dimethylcyclohexane-1,3-dione (Saloua Chelli et al, 2016).…”