Abstract
In previous papers the syntheses of seven-1 and eight-membered 2a, 2b ring compounds of the general formulas 5a, b have been described and the nine-membered2c homolog5c briefly mentioned. It was of interest to see whether the method of ring formation using an amino acid of type 3 was applicable to the preparation of larger ring systems. In this paper we would like to report the preparation of the bicyclic amines 5 which are the 9-, 10-, and 11-membered ring homologs of this series.