335151-02-5Relevant articles and documents
A double ring closing metathesis reaction in the rapid, enantioselective synthesis of NK-1 receptor antagonists.
Wallace,Goodman,Kennedy,Davies,Cowden,Ashwood,Cottrell,Dolling,Reider
, p. 671 - 674 (2007/10/03)
[structure: see text]. The NK-1 receptor antagonist 1 has been prepared in seven steps from phenylglycine methyl ester. The key steps are a double ring closing metathesis reaction of tetraene 7 to prepare spirocycle 6 and a reductive Heck reaction to introduce the aryl moiety. This latter reaction discriminates the olefins of compound 6 and proceeds in a highly regio- and stereoselective manner.