Synthesis of tetrathiacalix[4]arene functionalised by acetylhydrazone fragments
摘要:
The reactions of tetrathiacalix[4]arene: functionalised by acetylhydrazide groups with an excess of 4-nitrobenzaldehyde or tetrathiacalix[4]arene functionalised by chlorocarbonylmethoxy groups with an excess of 4-nitrobezaldehyde hydrazone lead to the preferable formation of tetrathiacalix[4]arene with an additional NW-diacetylhydrazine bridge, but in the case of pyridine-2-carboxaldehyde, only to the formation of tetrathiacalix[4]arene functionalised by four acetylhydrazone fragments.