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A novel synthesis of bis(benzoxazole) derivatives via tandem Claisen rearrangement

✍ Scribed by Emiko Koyama; Gang Yang; Kazuhisa Hiratani

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
82 KB
Volume
41
Category
Article
ISSN
0040-4039

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Novel bis(benzoxazole) derivatives were easily synthesized from isobutenyl bis(amide-ether)s by tandem Claisen rearrangement and subsequent intramolecular cyclization of the amide-phenol intermediates. The yields of the bis(benzoxazole)s depended on whether the reaction was carried out with or witho

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## Abstract Novel macrocyclic bis(phenylbenzoxazole) derivatives were easily synthesized from macrocyclic isobutenyl bis(amide‐ether)s by tandem Claisen rearrangement and subsequent intramolecular cyclization of the amide‐phenol intermediates. The position of substitution of the oligoethylene glyco