Diels-Alder Reaction of Met hanesulfon y 1 Cyanide with Cyclopentadiene. Industrial Synthesis of 2-Azabicyclo[2.2.1] hept-5-en-3-one ... Gareth J. Griffiths' and Felix E. Previdoli Research and Development Department, Lonza AG, CH-3930 Visp, Switzerland ... Racemic 2-azabicyclo[2.2.1lhept-5-en-3-one (1) has been used as an intermediate in the synthesis of carbocyclic ... Results and Discussion Of the two published syntheses of 1, the first made ...