Otto Paul Hermann Diels(German pronunciation:[ˈɔtoˈdiːls]ⓘ; 23 January 1876 – 7 March 1954) was aGermanchemist. His most notable work was done withKurt Alderon theDiels–Alder reaction, a method for cyclohexene synthesis.The pair was awarded theNobel Prize in Chemistryin 1950 for their work. Their method of synthesizing cyclic organic compounds proved valuable for the manufacture of synthetic rubber and plastic.He completed his education at theUniversity of Berlin, where he later worked. Diels was employed at theUniversity of Kielwhen he completed his Nobel Prize-winning work, and remained there until he retired in 1945. Diels was married, with five children. He died in 1954. He was survived by all five of his children and his wife. Fields: Chemistry