A survey of acid catalysts for use in two-step, one-flask syntheses of meso-substituted porphyrinic macrocycles
| Autor: | Jonathan S. Lindsey, Feirong Li, Haynes Dm, Yangzhen Ciringh, Geier Gr rd |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Acids
Noncarboxylic Aldehydes Porphyrins Magnesium Organic Chemistry Two step chemistry.chemical_element Biochemistry Copper Catalysis Acid catalysis chemistry.chemical_compound chemistry Tetraphenylporphyrin Organic chemistry Pyrroles Lewis acids and bases Physical and Theoretical Chemistry Brønsted–Lowry acid–base theory |
| Zdroj: | Organic letters. 2(12) |
| ISSN: | 1523-7060 |
| Popis: | [reaction: see text] Diverse Lewis acids and Bronsted acids were examined in the two-step, one-flask synthesis of meso-tetraphenylporphyrin, N-confused tetraphenylporphyrin, and tetraphenylsapphyrin. The scope of acid catalysis was found to be very broad, with 35 of 45 acids providing TPP in yields ranging from 5% to 58%. NC-TPP was also widely observed in yields of 1-40%, and TPS was infrequently observed in yields of1%. Additionally, conditions were found for direct preparation of magnesium TPP and copper TPP. |
| Databáze: | OpenAIRE |
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