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Phthalocrowns: Isoindoline-Crown Ether Macrocycles.
- Source :
-
Journal of Organic Chemistry . 12/21/2012, Vol. 77 Issue 24, p11372-11376. 3p. - Publication Year :
- 2012
-
Abstract
- The reaction of diiminoisoindoline with amine-terminated polyethers results in the formation of phthalocrown macrocycles. For n = 1 (where n is the number of ether units), a 2 + 2 condensation takes place, but for n = 2 and 3, a 1 + 1 macrocyde formation occurs. The n = 2 phthalocrown is particularly stable due to a strong intramolecular hydrogen bond, but the n = 3 ring hydrolyzes to form a 3-imino-l-oxoisoindoline derivatized crown ether species. For the n = 1 phthalocrown, we observed dynamic behavior in the ¹H NMR spectrum, and using VTNMR were able to measure a ΔG = 44.6 kJ/mol for proton exchange. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00223263
- Volume :
- 77
- Issue :
- 24
- Database :
- Academic Search Index
- Journal :
- Journal of Organic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 84607396
- Full Text :
- https://doi.org/10.1021/jo302227z