A palladium/norbornene cooperative catalysis promoted annulation involving an ortho-C–H amination and intramolecular Heck cascade between aryl iodides and functionalized amination reagents is reported, thereby providing a highly convergent access to the unique N-containing bridged scaffolds: hexahydro-2,6-methano-1-benzazocine.
A simple method of preparation of 7-alkyl-7-azabicyclo[2.2.1]heptanes
作者:Alfred Hassner、Anatoly M. Belostotskii
DOI:10.1016/0040-4039(95)00051-d
日期:1995.3
Action of triphenylphosphine - carbon tetrachloride on the trans-4-alkylaminocyclohexanols leads to 7-alkyl-7-azabicyclo[2.2.1]heptanes in the good yields. The starting aminoalcohols are easily available from the monoethylene ketal of 1,4-cyclohexanedione and primary amines in a four step process without isolation of intermediates.