159853-70-0Relevant articles and documents
Synthesis of novel bis(benzoxazole) derivatives by tandem Claisen rearrangement and their fluorescence behavior
Koyama, Emiko,Yang, Gang,Tsuzuki, Seiji,Hiratani, Kazuhisa
, p. 1996 - 2006 (2007/10/03)
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 wheth
New Synthesis of Macrocyclic Crown-Formazans from Pyruvic Acid Derivatives
Ibrahim, Yehia A.,Elwahy, Ahmed H. M.,Abbas, Ashraf A.
, p. 11489 - 11498 (2007/10/02)
The macrocyclic crown-formazans 7a-c, 12a-g were prepared by the azo-coupling of the appropriate bis-diazonium salts 4a-c with pyruvic acid and arylpyruvic acids 8a-c.The ready accessability of the latters offers an easy access towards 1,5-symmetrically d