NaH-induced arylmethylation of p-cyanomehtylcalixarene introduces arylmethyl groups on the phenolic oxygens and the carbons α to the cyano groups to give calixarenes carrying very bulky upper-rim substituents. © 1993.
Sharma, S. K., & Gutsche, C. D. (1993). Synthesis of calixarenes carrying bulky upper-rim groups. Tetrahedron Letters, 34(34), 5389–5392. https://doi.org/10.1016/S0040-4039(00)73916-5