Chemistry Letters p. 931 - 934 (1989)
Update date:2022-08-04
Topics:
Shinkai, Seiji
Araki, Koji
Shibata, Jiro
Tsugawa, Daisuke
Manabe, Osamu
Six azocalix<4>arenes were synthesized for the first time by diazo-coupling reactions with calix<4>arene.The products showed unusual spectral properties including an azophenol - quinine-hydrazone tautomerism.Owing to the chromophoric nature, the four pK
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