Cram , Donald James
(1919–) American chemist
Born in Chester, Vermont, Cram was educated at the University of Nebraska and at Harvard, where he completed his PhD in 1947. He moved immediately to the University of California, Los Angeles, where he served as professor of chemistry from 1956 until 1995.
In 1963 Charles Pedersen announced his discovery of the first of the crown ethers. Cram, it was reported, spent the next 48 hours in his laboratory fiddling with model kits and making a variety of new structures. He soon came to see that crown ethers could be modified in such a way as to distinguish between different forms of chiral molecules, i.e. molecules and their mirror images. By 1973 he had succeeded in devising crown ethers that could identify optically active amino acids. Cram introduced the name ‘host–guest’ chemistry to describe such reactions.
For his work in this new field Cram shared the 1987 Nobel Prize for chemistry with Pedersen and J-M. Lehn.

Scientists. . 2011.

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  • Cram, Donald James — ▪ 2002       American chemist (b. April 22, 1919, Chester, Vt. d. June 17, 2001, Palm Desert, Calif.), was awarded the 1987 Nobel Prize for Chemistry for his development of ways to build molecules that could mimic the functioning of molecules in… …   Universalium

  • Donald James Cram — (* 22. April 1919 in Chester, Vermont; † 17. Juni 2001 in Palm Desert, Kalifornien) war ein amerikanischer Chemiker und Chemienobelpreis Träger. Cram studierte Chemie am Rollins College, Florida und an der Universität Nebraska. Nach der Promotion …   Deutsch Wikipedia

  • Donald James Cram — Saltar a navegación, búsqueda Donald James Cram Nacimiento 22 de abril de 1919 Chester, Vermont, Estados Unidos …   Wikipedia Español

  • Donald James Cram — Donald J. Cram Pour les articles homonymes, voir Cram. Donald J. Cram Naissance 22 avril 1919 Chester, Vermont (États Unis) …   Wikipédia en Français

  • Cram, Donald J. — ▪ American chemist in full  Donald James Cram  born April 22, 1919, Chester, Vermont, U.S. died June 17, 2001, Palm Desert, California       American chemist who, along with Charles J. Pedersen (Pedersen, Charles J.) and Jean Marie Lehn (Lehn,… …   Universalium

  • Chemienobelpreis 1987: Donald James Cram — Jean-Marie Pierre Lehn — Charles John Pedersen —   Die Amerikaner Cram und Pedersen erhielten den Nobelpreis zusammen mit dem Franzosen Lehn für die »Entwicklung und Anwendung von Molekülen mit strukturspezifischen Wechselwirkungen von hoher Selektivität«.    Biografien   Donald James Cram, *… …   Universal-Lexikon

  • Cram — Donald James …   Scientists

  • Donald J. Cram — Donald James Cram Born April 22, 1919 Chester, Vermont Died June 17, 2001 (aged 82) Palm Desert, California[1] …   Wikipedia

  • Donald Cram — Donald J. Cram Pour les articles homonymes, voir Cram. Donald J. Cram Naissance 22 avril 1919 Chester, Vermont (États Unis) …   Wikipédia en Français

  • Donald J. Cram — Donald James Cram (* 22. April 1919 in Chester, Windsor County, Vermont; † 17. Juni 2001 in Palm Desert, Kalifornien) war ein amerikanischer Chemiker und Chemienobelpreis Träger. Cram studierte Chemie am Rollins College, Florida und an der… …   Deutsch Wikipedia

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