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Thermal Rearrangements of Bis-Allenyl Thiosulfonates. Synthesis of Novel Thienothiophene and Thieno-oxathiine Derivatives.

✍ Scribed by Mihail L. Birsa; Marina Cherkinsky; Samuel Braverman


Publisher
John Wiley and Sons
Year
2003
Weight
124 KB
Volume
34
Category
Article
ISSN
0931-7597

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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