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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Arene-Cucurbiturils: Benzene-Containing Cucurbituril[2,4] and Benzene-Containing Cucurbituril[3,6]
Ai-Jiao Wang1, Jian-Jie Han1, Ming-He Ren1
1Department of Chemistry, College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, P. R. China.
Abstract:
Benzene-containing cucurbituril[2,4] and benzene-containing cucurbituril[3,6], the structures of cucurbit[n]urils with some glycoluril units replaced by benzene rings, are constructed through condensation of specific benzene-containing motifs. These novel macrocycles inherit cucurbit[n]urils' concave cavity and provide chemical modification potentiality and chromophores. Benzene-containing cucurbituril[2,4] shows a C2-symmetric macrocycle, while benzene-containing cucurbituril[3,6] exhibits a distinctive two-cavity structure (one big and one small) that resembles a gourd and could potentially accommodate two guests different in size simultaneously.
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