Chemistry Letters, Vol.34, No.3, 434-435, 2005
Helical stereocontrol of 2,6-bis{(2-arylcarbamoylphenyl)carbamoyl}pyridine derivatives by use of chiral auxiliaries
The helical stereochemistry of 2,6-bis{(2-arylcarbamoylphenyl)carbamoyl}pyridine derivatives 1 can be controlled by the chiral auxiliaries bonded to the terminal carbonyl groups. Their preferred helical stereochemistry was determined from the signs and shapes of their CID spectra by the exiton chirality method.