Synthesis of pyrazole-containing azacrown ethers by intramolecular nitrilimine cycloadditions
β Scribed by Gianluigi Broggini; Luisa Garanti; Giorgio Molteni; Gaetano Zecchi
- Book ID
- 108374620
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 410 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-4020
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π SIMILAR VOLUMES
A number of papers are available describing the construction of macrocyclic systems through intramolecular cycloadditions of 1,3-dipoles such as nitriioxides, I's nitrilimines, 6 azides, 7 nitmne~ s azomethinylides, ~'~Β° and carbonylylides, tl Our recent conm'butions in this field 6 are concerned wi
## Synthesis of 5) pyrazolophanes by Sequential Intermolecular-Intramolecular Nitrilimine Cycloadditions. -Nitrilimines generated in situ from hydrazonyl chlorides such as (I) and (IV) undergo cyclization to mono-and bispyrazolophanes which are of interest in supramolecular chemistry.