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.
