How was Herbert C. Brown awarded the Noble Prize?

Name: Herbert C. Brown. 
Country: Russian-Jewish.
Date of Birth: 22 May 1912.
Date of Death: 19 December 2004.
The subject of Study: Borane carbonium ion chemical reaction.
Noble Prize Year: Nobel Prize for Chemistry in 1979 for their development of the use of boron- and phosphorus-containing compounds, respectively, into important reagents in organic synthesis.