反应详情

The procedure was carried out as described previously in step (b) of Example 8 with Compound 7 (1.9 g, 9.3 mmol), 2-succinimido-1,1,3,3-tetramethyluronium tetrafluoroborate (3.4 g, 11.2 mmol), N,N-diisopropyl ethylamine (3.4 mL, 19.5 mmol), 2-amino-5-diethylaminopentane (2.2 g, 13.9 mmol) and DMF (40 mL). Compound 10 was obtained (2.64 g) as a viscous liquid and used without any further purification. The structure of Compound 10 is given below: