Concave reagents, 8. Concave pyridines and 1, 10??phenanthrolines with sulfonamide bridgeheads. Increased basicity by 4??diethylamino substitution of the pyridine …
U Lüning, R Baumstark, M Müller
文献索引:Luening, Ulrich; Baumstark, Roland; Mueller, Michael Liebigs Annalen der Chemie, 1991 , # 10 p. 987 - 998
Abstract Bimacrocyclic concave pyridinebissulfonamides 2 and concave 1, 10- phenanthrolinebissulfonamides 4 have been synthesized by bridging macrocyclic pyridinediamines 12 or 1, 10-phenanthrolinediamines 16 with alkylenebis (sulfonyl chloride) s 14. In contrast to concave pyridine-and 1, 10-phenanthrolinebislactams 1 and 3, the new compounds 2 and 4 exhibit simpler 1 H-NMR spectra and sharper melting points due to ...