Tetrahedron Letters p. 5949 - 5952 (1999)
Update date:2022-08-16
Topics:
Dudic, Miroslav
Lhotak, Pavel
Kral, Vladimir
Lang, Kamil
Stibor, Ivan
A novel method for the preparation of porphyrin-based biscalix[4]arenes has been developed, starting from appropriate aryldipyrrolyhnethane and calix[4]arene monoaldehyde. The condensation reaction in the presence of BF3 · Et2O leads
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