In order to obtain a useful model system for the sedimentary tetrahydrobenzoporphyrins the title compound (X) is synthesized via an efficient approach, which is a practical alternative for the synthesis of such substances. Mono-labeling of (X) is achieved in an identical way using only (I) or (IX) i
Porphyrins with exocyclic rings. Part 8. Synthesis of nitrogen-15 and carbon-13 labeled 2,3:7,8:12,13:17,18-tetrabutanoporphyrin
✍ Scribed by Shaohua Chen; Timothy D. Lash
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1997
- Tongue
- English
- Weight
- 441 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0022-152X
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✦ Synopsis
Abstract
Nitrogen‐15 labeled butyl 4,5,6,7‐tetrahydro‐2__H__‐isoindoIe‐1‐carboxylate was prepared via butyl iso‐cyanoacetate from ^15^N‐glycine in an overall 46% yield. This bicyclic intermediate was converted into nitrogen‐15 and carbon‐13 labeled 2,3:7,8:12,13:17,18‐tetrabutanoporphyrin, a useful model system for the sedimentary tetrahydrobenzoporphyrins.
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