Abstract
The condensation of thiophosphorylated aldehydes 1 and 2 with resorcinol and its derivatives leads to the formation of the new type of calix[4]resorcinols with four thiophosphoryl groups inserted to the substituents located in methylidene bridges of the molecule. The conformation of these compounds was found to be “flattened partial cone” or “chair,” which was determined by NMR methods and a single-crystal X-ray diffraction study.
GRAPHICAL ABSTRACT
Acknowledgements
The work was supported by the Russian Foundation for Basic Research (grant no. 08-03-00512a).