Dichloromethane → HCID 67818192, compound

Participants

Reaction Steps

To a vial containing 8-chloro-1-methylspiro[benzo[e]isoxazolo[5,4-c]azepine-4,1′-cyclopropan]-6(5H)-one (0.0631 g, 0.230 mmol) was added CH2Cl2 (1 mL). The reaction mixture was heterogeneous and to aid in solubility CHCl3 (0.5 mL) was added. To the homogeneous mixture was added phosphorous pentachloride (0.092 g, 0.442 mmol) in one portion at room temperature. The reaction mixture eventually turned heterogeneous again (˜<10 min) and LC-MS analysis after ˜30 min indicated complete consumption of starting material and formation of desired product. The mixture was diluted with EtOAc and aqueous 10% Na2CO3 (2.8 mL). After initial effervescence, the mixture was stirred for an additional 5-10 min, and the aqueous layer was extracted with EtOAc (3×). The combine organic extracts were washed with water, brine, dried over Na2SO4 and concentrated to give yellow solids. The solids were filtered over a plug of silica and eluted with 30% EtOAc:70% Hexanes. The product 6,8-dichloro-1-methylspiro[benzo[e]isoxazolo[5,4-c]azepine-4,1′-cyclopropane] (61.8 mg, 0.211 mmol, 92% yield) was obtained as off-white solids. LC/MS m/z 293 [M+H]+.

Provenance & Evidence