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tufe of 1.00 g (1.92 mmoles; of 2d, 200 ml of dry Et8U, and 0.539 g (4.SO mmoles) of KO-í-Bu (K & K Laboratories) was stirred at room temperature for 30 min (progress of reaction followed by ir spectroscopy). The reaction mixture was filtered with suction and the filtrate was evaporated under reduced pressure at 35°.The solid residue was recrystallized from heptane to afford 0.441 g (64',) of la: mp 100.5-102.0°; ir, 1832 cm-1; nmr 7.47 (2 IT, si, 7.07-8.60 (14 H, m), 8.75 (18 H, s'). Anal. (CV.H31N..08) C, H. X. l,3-Bls[l-(l-adamantyl)-2-oxo-3-aziridiny 1 ]adamantane (lb).•A mixture of 1.00 g (1.48 mmoles) of 2e, 200 ml of dry Et»0, and 0.414 g (3.70 mmoles) of KO-í-Bu (K & K Laboratories) was stirred at room temperature for 30 min, and worked up as described above to furnish, after recrystallization from heptane, 0.456 g (60%) of lb: mp '-480-190°dec; ir, 1832 cm-1; nmr