The synthesis of 22 ?-electron macrocycles. Sapphyrins and related compounds
β Scribed by Broadhurst, M. J.; Grigg, R.; Johnson, A. W.
- Book ID
- 115505563
- Publisher
- Royal Society of Chemistry
- Year
- 1972
- Weight
- 782 KB
- Volume
- 0
- Category
- Article
- ISSN
- 1472-7781
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π SIMILAR VOLUMES
48824 nately between the pyrrolic rings, l\_, gives rise to a family of coplanar porphyrin vinylogs, the platyrins? Like the porphyrins,[m,n,m,n]platyrins (m and n = odd numbers) are conjugated tetraazaannulenes containing 4n + 2 a-electrons. Thus,they might be expected to be "aromatic"(diatropic).2
Conjugated Macrocycles Related to the Porphyrins. Part 17. Oxidation with Dilute Aqueous Ferric Chloride Solutions Greatly Improves Yields in the [4 + 1] Synthesis of Sapphyrins. -The '4+1' route to porphyrins is extremely improved by use of 0.1% aqueous ferric chloride as oxidant in place of DDQ,