Nf. Goldshleger et al., THE REACTION OF ETHYL 2,6-DIMETHYL-1,4-DIHYDROPYRIDINE-3,5-DICARBOXYLATE WITH FULLERENE C-60, Russian chemical bulletin, 45(10), 1996, pp. 2402-2404
Heating (100 degrees C, toluene) or photolysis (Nd3+ : YAG laser, lamb
da = 532 nm, benzonitrile) of a mixture of ethyl 2,6-dimethyl-1,4-dihy
dropyridine-3,5-dicarboxylate (Hantsch ester) (1) and fullerene C-60 u
nder anaerobic conditions results in the formation of fullerene hydrog
enation products and ethyl 2,6-dimethylpyridine-3,5-dicarboxylate, whi
ch is the product of dehydrogenation of 1, identified by IR spectrosco
py and mass spectrometry. The triplet state of C-60 is quenched by the
Hantsch ester.