Israel is a professor in the Department of Organic Chemistry at The Hebrew University of Jerusalem. His research interests are: organic chemistry and medicinal chemistry; dynamic stereochemistry; novel aromatic compounds; aromaticity; large polycyclic aromatic hydrocarbons and carcinogenicity; overcrowded polycyclic aromatic enes; reversibility of Friedel-Crafts acylations; chiral drugs; chiral recognition quinine and quinidine in chiral discrimination.; the guanidine entity in medicinal chemistry and molecular recognition; polycyclic antidepressant agents; antiprogestins.