The Diels-Alder reactions of protoporphyrin IX dimethyl ester with electron-deficient alkynes
β Scribed by Pangka, Veronica Scherrer; Morgan, Alan R.; Dolphin, David
- Book ID
- 125966992
- Publisher
- American Chemical Society
- Year
- 1986
- Tongue
- English
- Weight
- 1004 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0022-3263
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π SIMILAR VOLUMES
## Abstract Theoretical calculations and simple MO considerations predict that a coplanar and spatially close arrangement of double bonds in structures such as tetradehydrodianthracene 1, should both lower the LUMO and raise the HOMO energy of the Ο system. Thus the reactivity in DielsβAlder reacti
Ab5tract: 4-Ethyl-5-methyl-6-mthylthio-2(H)-pyranone (4) undergoes Dials-Alder reactions with ethyl hexynoate (5). 3-heptyn-2-one (6). ethyl ptopiolate (7). and3-butyn-2-one (8) to afford substituted banzenes with high ragioselectivity upon extrusion of CO2. 4-Ethyl-5.6-dimethyl-( 4-ethyl-3,6-dimeth