(Z)-3-(3-Phenylallylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione
نویسندگان
چکیده
منابع مشابه
(Z)-3-(3-Phenylallylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione
In the title compound, C(18)H(18)O(4), the 1,3-dioxane ring adopts a distorted envelope conformation with the C atom common to the cyclo-hexane ring forming the flap. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds occur.
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In the title compound, C(16)H(19)NO(4), a potent new herbicide, the dihedral angle between the benzene and pyrrolidine rings is 11.09 (8)°. Intra-molecular O-H⋯O and C-H⋯O hydrogen bonds are observed.
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In the title mol-ecule, C(12)H(11)NO(4), the two acetyl C-C=O planes are inclined to the benzene ring at angles of 18.03 (8) and 80.75 (7)°. In the crystal, adjacent mol-ecules are linked into centrosymmetric dimers by pairs of C-H⋯O inter-actions.
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The title compound (itaconic anhydride), C5H4O3, consists of a five-membered carbon-oxygen ring in a flat envelope conformation (the unsubstituted C atom being the flap) with three exocyclic double bonds to two O atoms and one C atom. In contrast to the bond lengths, which are very similar to those in itaconic acid in its pure form or in adducts with other mol-ecules, the bond angles differ sig...
متن کامل3-Phenyltetrahydrofuran-2,5-dione
In the title compound, C(10)H(8)O(3), the dihedral angle between the approximately planar tetra-hydro-furan-2,5-dione ring [maximum deviation 0.014 (3) Å] and the phenyl ring is 85.68 (8)°. Weak C-H⋯O=C inter-molecular hydrogen-bonding contacts are observed in the structure.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809038781