mmol) of THF containing 5% CH3NH2 was stirred for 73.5 h at room temperature. After removal of solvent in vacuo the residue was extracted with CH2C12. The CHzClz extracts were washed with HzO, dried over Na2S04, filtered, and evaporated to give a residue which was chromatographed on silica gel. The residue of fractions eluted with CH2C12 was collected and washed with isopropyl ether to give 574 mg (83%, mp 248-250" C) of 9j. ...