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【Org. Lett. 2015, 17, 2442–2445】
一、制备Ellman亚胺
General Procedure for N-Sulfinyl Aldimine Formation. To a dry round bottom flask equipped with a football shaped magnetic stir bar was charged aldehyde (2.0 mmol, 1.0 equiv), (S)-tert-butanesulfinamide (291 mg, 2.4 mmol, 1.2 equiv) and THF (2.0 mL). The flask was sealed with a rubber septum and a nitrogen inlet needle was inserted in the septum. The reaction mixture was then treated dropwise with B(OCH2CF3)3 (0.43 mL, 2.0 mmol, 1.0 equiv) and the solution was stirred at rt for 2-6 h (until complete consumption of aldehyde by HPLC analysis at 220 nm). The reaction mixture was then diluted with EtOAc and the EtOAc solution was washed with saturated aqueous NaHCO3 solution followed by water. The organic phase was then dried over Na2SO4, filtered and concentrated to give the crude product. Purification by flash chromatography on SiO2 using hexanes/MTBE as eluent gave the pure product.
二、制备N-甲苯磺酰基亚胺
三、制备N-(二甲胺)磺酰基亚胺
四、N-二苯基次膦酰基亚胺
五、N-(α-甲基苄基)亚胺
