Title of article
Preparation of 1,4,5,8-tetra-tert-butyl-1,3,5,7-cyclooctatetraene by twofold SO2 extrusion
Author/Authors
Takayama، نويسنده , , Jun and Sugihara، نويسنده , , Yoshiaki and Ishii، نويسنده , , Akihiko and Nakayama، نويسنده , , Juzo، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2003
Pages
4
From page
7893
To page
7896
Abstract
Oxidation of cis-1-transoid-1,2-cis-2-3,4,7,8-tetra-tert-butyl-9,10-dithiatricyclo[4.2.1.12,5]deca-3,7-diene 9,10-dioxide (2) by dimethyldioxirane gave the corresponding tetraoxide 4 quantitatively, which in turn provided 1,4,5,8-tetra-tert-butyl-1,3,5,7-cyclooctatetraene (6a) quantitatively by twofold thermal SO2 extrusion. The molecular structure of 6a is described on the basis of DFT calculations (B3LYP/6-31G(d) level) and X-ray crystallographic analysis.
Keywords
DFT calculations , cyclooctatetraene , steric congestion , extrusion of SO2 , X-ray crystallographic analysis
Journal title
Tetrahedron Letters
Serial Year
2003
Journal title
Tetrahedron Letters
Record number
1655121
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