He was awarded the 2005 Nobel Prize in Chemistry , along with Robert H. Grubbs and Richard R. Schrock , for his work from the early 1970s on olefin metathesis . He was awarded the 2005 Nobel Prize in Chemistry , along with Robert H. Grubbs and Richard R. Schrock , for his work from the early 1970s in the area of olefin metathesis .