Saul Winstein

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Saul Winstein
Born (1912-10-08)October 8, 1912
Montreal, Quebec, Canada
Died Script error: The function "death_date_and_age" does not exist.
Los Angeles, California, United States
Nationality Canadian
Fields Physical Organic Chemistry
Institutions UCLA
Known for Winstein reaction
Grunwald-Winstein equation
Non-classical cation
Anchimeric assistance
Notable awards ACS Award in Pure Chemistry (1948)
National Medal of Science (1970)

Saul Winstein (October 8, 1912 – November 23, 1969) was the Canadian chemist who discovered the Winstein reaction, in which he argued a non-classical cation was needed to explain the stability of the norbornyl cation.[1] This fueled a debate with Herbert C. Brown over the existence of delocalized cations such as this. He also first proposed the concept of an intimate ion pair.[2]

Richard F. Heck, who earlier in his career had undertaken postgraduate studies with Winstein, won the 2010 Nobel Prize in Chemistry.[3]

Co-author of the Grunwald-Winstein equation concerning solvolysis rates.[4]


  1. Young, W. G.; Cram, D. J. (May 1970). "Professor Saul Winstein October 8, 1912-November 23, 1969". International Journal of Chemical Kinetics. 2 (3): 167–173. doi:10.1002/kin.550020302.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. Winstein, S.; Clippinger, E.; Fainberg, A. H.; Heck, R.; Robinson, G. C. (January 1956). "Salt Effects and Ion Pairs in Solvolysis and Related Reactions. III.1 Common Ion Rate Depression and Exchange of Anions during Acetolysis". Journal of the American Chemical Society. 78 (2): 328–335. doi:10.1021/ja01583a022.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. "The problem of the non-classical ion". Nobel Media. Retrieved 14 July 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. W. G. Young, D. J. Cram (1951). "The Correlation of Solvolysis Rates and the Classification of Solvolysis Reactions Into Mechanistic Categories". Journal of the American Chemical Society. 73 (6): 2700–2707. doi:10.1021/ja01150a078.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

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