Eg. Nikiforova et al., 3-azabicyclo[3.3.1]nonane derivatives: V. Synthesis of 7-polyfluoroalkoxy-1,5-dinitro-3-azabicyclo [3.3.1]non-6-enes, RUSS J ORG, 37(5), 2001, pp. 734-738
A number of 7-polyfluoroalkoxy-1,5-dinitro-3-azabicyclo[3.3.1]non-6-enes we
re synthesized by reduction of 3,5-dinitrophenyl polyfluoroalkyl ethers wit
h sodium tetrahydridoborate, followed by the Mannich reaction with formalde
hyde and primary amines.