Original Paper

Journal of Chemical Crystallography

, Volume 43, Issue 4, pp 223-227

Syntheses and Crystal Structures of 1,5-Dioxaspiro[5.5]undecane-2,4-dione Derivatives

  • Wulan ZengAffiliated withDepartment of Chemistry, Chemical Engineering and Environmental Engineering, MicroScale Science Institute, Weifang University Email author 
  • , Yufeng LiAffiliated withDepartment of Chemistry, Chemical Engineering and Environmental Engineering, MicroScale Science Institute, Weifang University
  • , Huanmei GuoAffiliated withDepartment of Chemistry, Chemical Engineering and Environmental Engineering, MicroScale Science Institute, Weifang University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

The 3-(2,3,4-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 1 and 3-(3,4,5-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 2 have been synthesized and characterized by X-ray single-crystal diffraction, IR and UV–Vis. Compound 1 belongs to the orthorhombic system, space group Pna21 with a = 10.182(2) Å, b = 11.828(2) Å, c = 14.356(3) Å, α = 90°, β = 90°, γ = 90°, V = 1,729.0(6) Å3, Z = 4. Compound 2 is of Triclinic system, space group P-1 with a = 8.7807(18) Å, b = 9.4383(19) Å, c = 11.450(2) Å, α = 98.64(3)°, β = 103.28(3)°, γ = 99.44(3)°, V = 893.4(3) Å3, Z = 2. It is very interesting that there are only C–H···O and C–H···π intermolecular interaction in the 1, while there are still π···π stacking interactions except for C–H···O and C–H···π intermolecular interaction in the structure of 2.

Graphical Abstract

Two new spiro compounds, 3-(2,3,4-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 1 and 3-(3,4,5-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 2 have been synthesized and characterized by X-ray single-crystal diffraction, IR and UV–Vis.
http://static-content.springer.com/image/art%3A10.1007%2Fs10870-013-0408-z/MediaObjects/10870_2013_408_Figa_HTML.gif

Keywords

Synthesis Crystal structure 1,5-Dioxaspiro[5.5]undecane-2,4-dione Spiro compound