MULTITURN HELICAL SELF-ORGANIZATION OF EXTENDED ALTERNATING PYRIDINE-PYRIMIDINE STRANDS

摘要

The preprogrammed achiral oligomers (3) and (4),composed of pyridine-pyrimidine sequences cntaining up to 27 heterocycles,undergo selforganization into extended multiturn helical stuctures both in solution and in the solid state,with spontaneous chiral resolution of 3 on crystallization.