1′-Allyl-1-(3,4-di­methyl­benzo­yl)-2-(4-methyl-1,3-thia­zol-5-yl)-1,2,5,6,7,7a-hexa­hydro­spiro­[pyrrolizine-3,3′-indolin]-2′-one

In the title compound, C₃₀H₃₁N₃O₂S, the fused pyrrolidine ring bearing three substituents adopts an envelope conformation with the C atom bearing the benzoyl group as the flap. The other fused pyrrolidine ring adopts a twisted conformation about one of its C—C bonds. The dihedral angle between the isatin ring system and the methyl­thia­zole ring is 25.95 (8)°. An intra­molecular C—H...O inter­action closes an S(8) ring. In the crystal, mol­ecules are linked by C—H...O inter­actions, generating C(11) chains propagating in [001].

Crystal structure of 2,6-bis­(2,5-di­meth­oxy­phen­yl)-3,5-di­methyl­piperidin-4-one

In the title mol­ecule, C₂₃H₂₉NO₅, the central piperidine ring has a chair conformation. The planes of the two benzene rings are inclined each to other at 61.7 (1)°. The crystal packing exhibits no directional inter­actions only van der Waals contacts.

Crystal structure of 2,4-bis­(2-chloro­phen­yl)-7-tert-pent­yl-3-aza­bicyclo[3.3.1]nonan-9-one

The title compound, C₂₅H₂₉Cl₂NO, which is a chloro analog of 2,4-bis­(2-bromo­phen­yl)-7-(tert-pent­yl)-3-aza­bicyclo­[3.3.1]nonan-9-one [Park, Ramkumar & Parthiban (2012). Acta Cryst. E68, o2946], exists in a twin-chair conformation with an equatorial orientation of the 2-chloro­phenyl groups. The tert-pentyl group on the cyclo­hexa­none adopts an exocyclic equatorial position and is disordered between two orientations in a ratio 0.520 (8):0.480 (8). The crystal packing shows no directional contacts beyond van der Waals contacts.