2-(4-Methoxybenzylidene)-4,4-dimethyl-3,4-dihydronaphthalen-1(2H)-one

Abstract

The title compound C20H20O2, has the exocyclic C=C double bond in an E configuration. The two benzene rings form a dihedral angle of 72.92 (6)°.

(2E)-2-Benzylidene-4-ethyl-3,4-dihydronaphthalen-1(2H)-one

“…In the title compound, as shown in Fig. 1, all bond lengths and angles are normal and comparable with those reported for the related structure [Akhazzane et al, (2010)].…”

“…For general background to dipolar-1,3 cycloaddition reactions, see: Bennani et al (2007); Kerbal et al (1988); Al Houari et al (2008). For a related structure, see: Akhazzane et al (2010). For puckering parameters, see: Cremer & Pople (1975).…”

Crystal structure of (E)-4-ethyl-2-(4-methoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one

“…exocyclic C=C double bond, an X-ray crystal structure determination has been carried out. The present work is a continuation of the investigation of the dihydronaphthalene derivatives published recently by Akhazzane et al, 2010. The molecule of the title compound is formed by two fused rings linked to an ethyl group and to a 4-methoxybenzylidene moities as shown in Fig.1. The cyclohexanone ring adopts a screw-boat conformation as indicated by the total puckering amplitude QT = 0.477 (2) Å and spherical polar angle θ = 115.9 (2)° with φ = 35.6 (2)°.…”

“…For general background to dipolar 1,3-cycloaddition reactions, see: Bennani et al (2007); Kerbal et al (1988); Al Houari et al (2008). For a related structure, see: Akhazzane et al (2010 Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2015); molecular graphics: ORTEPIII (Burnett & Johnson, 1996) and ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010). exocyclic C=C double bond, an X-ray crystal structure determination has been carried out.…”

Crystal structure of 4-(4-methoxyphenyl)-4′,4′-dimethyl-3-p-tolyl-3′,4′-dihydro-1′H,3H-spiro[isoxazole-5,2′-naphthalen]-1′-one

“…The relative configuration and conformation of the products have been determined by means of proton magnetic resonance measurements. In this paper we describe the regiochemistry in the reaction of para-tolylnitriloxide with (E)-2-(4-methoxybenzylidene)-4,4-dimethyl-3,4-dihydronaphthalen-1(2H)-one, as a continuation of the investigation on dihydronaphthalene derivatives (Akhazzane et al, 2010, Akhazzane et al, 2011, Mahfoud et al, 2015.…”