Two General Routes to 1,4-Disubstituted-2,3,4,5-tetrahydro- 1<i>H</i>-3-benzazepines
作者:Samuel W. Gerritz、Jennifer S. Smith、Suganthini S. Nanthakumar、David E. Uehling、Jeffery E. Cobb
DOI:10.1021/ol0067641
日期:2000.12.1
[GRAPHICS]Two general routes to 1,4disubstituted-2,3,4,5-tetrahydro-1H-3-benzazepines are described. Both routes utilize an appropriately functionalized phenethylamino alcohol as the penultimate intermediate: the first route makes use of the reductive amination of a benzyl alkyl ketone with alpha-(aminomethyl)benzyl alcohol, while the second route utilizes the addition of a Grignard reagent to the oxazolidine derived from a substitued phenylacetaldehyde and alpha-(methylaminomethyl)benzyl alcohol, In all cases studied, the cis-1,4-disubstituted-2,3,4,5-tetrahydro-1H-3-benzazepine was obtained as the major product.