Abstract
Late stage diversification of calix[4]arenes and thiacalix[4]arenes with heterocycles remains a significant synthetic challenge and hampers further exploitation of the scaffolds. Here we describe the development of a short and facile synthetic route to conformationally diverse novel calix[4]arene and thiacalix[4]arene ynones using a palladium cross coupling approach (5% Pd(II) + 10% Cu(I)) with benzoyl chloride. Their successful conversion to heterocycles to afford pyrazoles was demonstrated through treatment with hydrazine. Functionalisation is calixarene conformation and linker independent enabling access to a library of structures.
| Original language | English |
|---|---|
| Pages (from-to) | 32765-32769 |
| Number of pages | 5 |
| Journal | RSC Advances |
| Volume | 8 |
| Issue number | 57 |
| DOIs | |
| Publication status | Published - 21 Sept 2018 |