Aromatic Oligoureas: Enforced Folding and Assisted Cyclization

Aromatic oligoureas are forced into well-defined conformation by incorporated intramolecular hydrogen bonds. Shape-persistent tetraureas macrocycles were obtained in a one-step [2 + 2] reaction in good yields.

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Bibliographische Detailangaben
Veröffentlicht in:	Organic letters 2006-03, Vol.8 (5), p.803-806
Hauptverfasser:	Zhang, Aimin, Han, Yaohua, Yamato, Kazuhiro, Zeng, Xiao Cheng, Gong, Bing
Format:	Artikel
Sprache:	eng
Schlagworte:	Biopolymers - chemistry Cyclization Hydrogen Bonding Models, Molecular Molecular Conformation Molecular Structure Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization Urea - analogs & derivatives Urea - chemical synthesis Urea - chemistry
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Beschreibung
Zusammenfassung:	Aromatic oligoureas are forced into well-defined conformation by incorporated intramolecular hydrogen bonds. Shape-persistent tetraureas macrocycles were obtained in a one-step [2 + 2] reaction in good yields.
ISSN:	1523-7060 1523-7052
DOI:	10.1021/ol0526322