Porphyrenediynes: synthesis and cyclization of meso-enediynylporphyrins

Autor: David W. Thomas, John D. Spence, Amanda E. Hargrove, Hannah L. Crampton
Rok vydání: 2007
Předmět:
Zdroj: Tetrahedron Letters. 48:725-728
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2006.10.164
Popis: Synthetic methodology to prepare porphyrinylethynyl enediynes has been developed. Compared to phenylethynyl derivatives, a bulky porphyrinic substituent on the alkyne significantly increases the thermal barrier toward Bergman cyclization and leads to multiple photolysis products.
Databáze: OpenAIRE