cumulenes

With the German economic miracle of the 1950s, however, his research group returned to its former level of productivity, with notable successes involving studies of biological resistance factors and a return to important studies of cumulenes, radicals and other topics in pure organic chemistry.

Richard Kuhn and the Chemical Institute: Double Bonds and Biological Mechanisms 2010

Kuhn's work with polyenes, flavins, vitamins, as well as cumulenes brought him broad recognition and opened the door to a surge of similar biochemical research throughout the world.

Richard Kuhn and the Chemical Institute: Double Bonds and Biological Mechanisms 2010

(stereochemistry of aliphatic and aromatic compounds; syntheses of polyenes and cumulenes; constitution and colour; the acidity of hydrocarbons), as well as extensive fields in biochemistry

Richard Kuhn - Biography 1966