Synthesis and structure of new 3,3,9,9-tetrasubstituted-2,4,8,10-tetraoxaspiro[5.5]undecane derivatives.
نویسندگان
چکیده
The configurational and conformational behavior of some new 3,3,9,9-tetrasubstituted-2,4,8,10-tetraoxaspiro[5.5]undecane derivatives with axial chirality was investigated by conformational analysis and variable temperature NMR experiments.
منابع مشابه
Synthesis of biologically active novel bis Schiff bases, bis hydrazone and bis guanidine derivatives
A number of bis Schiff′s bases 3a-d have been synthesized by condensation of 2,4,8,10 tetraoxaspiro[5,5]undecane 3,9dipropanamine 1 with furfural, indole-3-aldehyde, 2-acetylpyridine, 4-acetylpyridine and 5a-c by condensation of 1,4-bis (3-aminopropyl) piperazine 4 with indole-3-aldehyde, 2-acetylpyridine, 4-acetylpyridine, in high yields by using microwave irradiation. Bis hydrazone derivative...
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متن کامل3,9-Dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane-3,9-dione
In the title compound, C(5)H(8)Cl(2)O(6)P(2), the two six-membered rings display chair conformations. The P=O bond distances are 1.444 (2) and 1.446 (2) Å. Weak inter-molecular C-H⋯O hydrogen bonds are present in the crystal structure.
متن کامل3,3,9,9-Tetraphenyl-2,4,8,10-tetraoxaspiro[5.5]undecane
In the title compound, C(31)H(28)O(4), the asymmetric unit contains two crystallographically independent mol-ecules. In these two mol-ecules, the four dihedral angles between each pair of phenyl rings on the same C atoms are 75.4 (1), 83.0 (1), 85.0 (1) and 80.4 (2)°. All of the nonplanar six-membered heterocycles adopt chair conformations. Inter-molecular C-H⋯π and weak C-H⋯O inter-actions lin...
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ورودعنوان ژورنال:
- Molecules
دوره 13 11 شماره
صفحات -
تاریخ انتشار 2008