From 1942 to 1945, Cram worked in chemical research at
Merck & Co laboratories, doing penicillin research with mentor
Max Tishler. He published over 350 research papers and eight books on organic chemistry, and taught graduate and post-doctoral students from 21 different countries. Cram expanded upon
Charles Pedersen's ground-breaking synthesis of
crown ethers, two-dimensional
organic compounds that are able to recognize and selectively combine with the ions of certain metal elements. He synthesized molecules that took this
chemistry into three dimensions, creating an array of differently shaped molecules that could interact selectively with other chemicals because of their complementary three-dimensional structures. Cram's work represented a large step toward the synthesis of functional laboratory-made mimics of
enzymes and other natural molecules whose special chemical behavior is due to their characteristic structure. He also did work in
stereochemistry and
Cram's rule of asymmetric induction is named after him. In 1973, Cram collaborated on research with Irish chemist
Francis Leslie Scott.
Professor Cram was named an
assistant professor at the
University of California, Los Angeles in 1947, and a professor in 1955. He served there until his retirement in 1987. He was a popular teacher, having instructed some 8,000 undergraduates in his career and guided the academic output of 200
graduate students. He entertained his classes by strumming his guitar and singing
folk songs. He showed a self-deprecating style, saying at one time: An investigator starts research in a new field with faith, a foggy idea, and a few wild experiments. Eventually the interplay of negative and positive results guides the work. By the time the research is completed, he or she knows how it should have been started and conducted.
Bibliography Technical Reports: • "Multiheteromacrocycles that Complex Metal Ions. Second Progress Report, 1 May 1975 – 30 April 1976",
UCLA,
United States Department of Energy (through predecessor agency the
U.S. Energy Research and Development Administration), (January 15, 1976). • "Multiheteromacrocycles that Complex Metal Ions. Fourth Progress Report, 1 May 1977 – 30 April 1978",
UCLA,
United States Department of Energy (through predecessor agency the
U.S. Energy Research and Development Administration), (January 15, 1978). • "Multiheteromacrocycles that Complex Metal Ions. Sixth Progress Report, 1 May 1979-30 April 1980",
UCLA,
United States Department of Energy, (January 15, 1980). • "Multiheteromacrocycles that Complex Metal Ions. Ninth Progress Report (includes results of last three years), 1 May 1980 – 30 April 1983",
UCLA,
United States Department of Energy, (September 15, 1982).
Books: • • • • • • • •
Awards and honors •
NAS Award in Chemical Sciences • Saul Winstein Endowed Chair in Organic Chemistry •
National Medal of Science, 1993 • International Academy of Science, Munich, member •
Glenn T. Seaborg Medal, 1989 • Golden Plate Award of the
American Academy of Achievement, 1988 •
ACS Southern California Tolman Award, 1984 •
ACS Chicago Section
Willard Gibbs Award, 1985 •
ACS Cope Award for Distinguished Achievement in Organic Chemistry, 1974 •
American Academy of Arts and Sciences, member, 1967 •
American Chemical Society Award for Creative Work in Synthetic Organic Chemistry, 1965 •
National Academy of Sciences, member, 1961 • 1987
Nobel Prize in Chemistry ==Personal life==