Azatripyrrolic and azatetrapyrrolic macrocycles from the Mannich reaction of pyrrole: receptors for anions.
Azatripyrrolic 1 and azatetrapyrrolic 2 macrocycles were synthesized in a single step by the Mannich reaction of pyrrole in the presence of primary amine hydrochloride and were structurally characterized among several other higher analogue azapyrrolic macrocycles. Binding constants for the halide anion complexes are determined by (1)H NMR titrations and they show different binding stoichiometries.
Mani
Ganesan
G
Department of Chemistry, Indian Institute of Technology, Kharagpur, India 721 302. gmani@chem.iitkgp.ernet.in
Jana
Debasish
D
Kumar
Rajnish
R
Ghorai
Debasish
D
D001372:Aza Compounds / Q000737:chemistry*; D006219:Halogens / Q000737:chemistry; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008352:Mannich Bases / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry*
D001372:Aza Compounds; D006219:Halogens; D047028:Macrocyclic Compounds; D008352:Mannich Bases; D011758:Pyrroles