Structure determination of the Diels-Alder product of a ketovinylphosphonate with E-1-acetoxy-1,3-butadiene
โ Scribed by Cynthia K. McClure; Keith J. Herzog; Martha D. Bruch
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 225 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
1-Benzyldimethylsilyl-4-phenylthio-1,3-butadiene (L), prepared by hydrosilation of propargyl alcohol, oxidation and followed by Wittig-Horner reaction, underwent Diels-Alder reaction with methyl methacrylate. The adduct after oxidation to the sulfone when treated with fluoride gave 5-carbomethoxy-5-
## Abstract The transition structures of the heteroโDielsโAlder reaction of (__E__)โ and (__Z__)โ1โazaโ1,3โbutadiene (8 and 11) were studied by means of ab initio (UHF/6โ31+G\* and RHF/6โ31+G\*) and semiempirical (AM1, PM3) methods. The energy surface of the title reaction was calculated with AM1/C