... the synthesis of polysubstituted dihydropyridines and/or pyridines which are of great interest as intermediates in medicinal chemistry. ... mol % PhB(OH) 2 , 1.5 mol % Pd 2 (dba) 3 , 3.6 mol % Cy 3 P, 200 mol ... Author: The chemical abbreviation PE was used in the paragraphs below ...