Abstract
The conventional Gross reaction for the formylation of the tetrapropoxythiacalix[4]arene using TiCl4 affords the 18-(chloromethyl)-28-hydroxy-25,26,27-tripropoxythiacalix[4]arene substituted in the meta-position of the macrocycle. The p-tetraformyl-tetrapropoxythiacalix[4]arene, which is an interesting intermediate to the upper-rims functionalization of thiacalixarenes, was prepared with a very good yield using BuLi and N-formylpiperidine. (C) 2004 Published by Elsevier Ltd.
| Original language | English |
|---|---|
| Pages (from-to) | 6329-6331 |
| Number of pages | 3 |
| Journal | Tetrahedron Letters |
| Volume | 45 |
| Issue number | 33 |
| DOIs | |
| Publication status | Published - 2004 |
Keywords
- calixarene
- formylation
- chloromethylation
- meta-substitution
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