2′,3′-Diphenyl-4′-p-tolylspiro[isothiachroman-3,5′-isoxazolidin]-4(2H)-one

Abstract

The title compound, C30H25NO2S, contains an isoxazolidine ring in a twist conformation with the spiro‐C [0.404 (2) Å] and the adjacent C atom [0.266 (2) Å] deviating from the plane of the remaining three atoms. The thia­pyran ring adopts a sofa conformation, with the five C atoms in a common plane (r.m.s.d. = 0.033 Å) and the S atom deviating by 0.984 (2) Å from this plane.

4-Isopropyl-2-(4-methoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one

“…Knowledge of the configuration and conformation of the title compound, (I), is necessary to understand its behaviour in dipolar-1,3 cycloaddition reactions (Badri et al, 1999;Bennani et al, 2002). To confirm the E configuration of the exocyclic C C double bond and the axial position of the isopropyl group an X-ray crystal structure determination was carried out.…”

“…Data collection: X-AREA (Stoe & Cie, 2001); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 1990); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: XP in SHELXTL-Plus (Sheldrick, 1991); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2003). Knowledge of the configuration and conformation of the title compound, (I), is necessary to understand its behaviour in dipolar-1,3 cycloaddition reactions (Badri et al, 1999;Bennani et al, 2002). To confirm the E configuration of the acyclic C═C double bond and the axial position of the isopropyl group an X-ray structure determination was carried out.…”