Synthesis of phenanthrenes from formylbenzoquinone
β Scribed by George A Kraus; Kim Hoover; Ning Zhang
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 72 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Phenanthrenes are synthesized by condensation of formylbenzoquinone with a substituted toluene followed by O-methylation and cyclization using the phosphazine base P 4 -tBu.
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## 77~ photosensitized electron transfer reactions of several I-and 9-(aminoalkyf)phenanthrenes with metadicyanobenzene have been investigated. These reactions provkie an effldent method of synthesis for the skeletal structures of the apcrphlne, phenantfwpipefM?e, and phenanthnxzephw alkabids. ##
A new general synthesis of substituted phenanthrene derivatives, involving photocyclization of substituted 2-iodostilbenes, is presented herewith. The usefulness of the method for the synthesis of nitrophenanthrenes, not readily accessible by other approaches, is illustrated in an efficient synthesi