Acetic Acid → HCID 67263579, compound

Participants

Reaction Steps

4-(2-Methoxy-3-nitro-6,7,8,9-tetrahydro-5H-benzocyclohepten-7-yl)-morpholine 2-Methoxy-3-nitro-5,6,8,9-tetrahydro-benzocyclohepten-7-one (4.94 g, 0.0210 mol) in Methylene chloride (100 mL, 2 mol) was treated with Morpholine (18.30 g, 0.2100 mol) and then Acetic acid (12.61 g, 0.2100 mol). Two mass equivalents of powdered 4 A molecular sieves were added and the mixture was heated to reflux and was allowed to stir for 4 hours. The solution was then cooled to room temp and Sodium triacetoxyborohydride (8.90 g, 0.0420 mol) was added. The reaction was then allowed to proceed until HPLC showed consumption of starting material. The reaction mixture was poured over saturated sodium bicarbonate, and organics were extracted with ethyl acetate/dichloromethane. Combined organics were dried over sodium sulfate, filtered and reduced en vacuo. The crude mixture was purified by Isco flash column chromatography (DCM/MeOH). Combined fractions were reduced en vacuo to afford 5.41 grams (84%) of 4-(2-Methoxy-3-nitro-6,7,8,9-tetrahydro-5H-benzocyclohepten-7-yl)-morpholine. 4-(2-Methoxy-1-nitro-6,7,8,9-tetrahydro-5H-benzocyclohepten-7-yl)-morpholine was made in an analogous manner using the same conditions described above.

Provenance & Evidence