Zhu Y, Bo F, Wang X, Jiang Q, Li Q, Han Z, Wang YN, Qi G. Construction of 1,3,4-oxadiazolines bearing CF
3-quaternary centers
via amino-assisted [3 + 2] cycloadditions.
Org Biomol Chem 2024;
22:1391-1394. [PMID:
38284244 DOI:
10.1039/d3ob02096g]
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Abstract
An amino-assisted [3 + 2] cycloaddition strategy of nitrile imines with o-aminotrifluoroacetophenones has been explored, thus providing functionalized 1,3,4-oxadiazolines bearing CF3-quaternary centers in good to excellent yields in the presence of K2CO3 under mild conditions. The amino groups located at the ortho-position of trifluoroacetophenone might play a crucial role in the present cyclization. The MTT assay shows that the 1,3,4-oxadiazoline derivatives could be potential candidates for the treatment of head and neck cancers.
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