Boron tribromide → HCID 10468741, compound

Participants

Reaction Steps

A solution of 1-ethyl-6-methoxy-2-(4-methoxyphenyl)pyrrolo[2,1,5-cd]indolizine (115 mg, 0.337 mmol) in 3 ml of dichloromethane was cooled to -70° C. and 1.05 ml of a 1M boron tribromide solution in dichloromethane was added. When the addition was complete, the cooling source was removed and the mixture allowed to reach room temperature. The reaction mixture was poured into a stirred mixture of dichloromethane (125 ml) and a saturated sodium hydrogen carbonate solution (125 ml). The pH was adjusted to neutral with a 4M hydrochloric acid solution. The organic phase was separated and the aqueous phase further extracted with dichloromethane. The combined organic phases were dried and evaporated to leave 40 mg (40%) of the title compound as a semi solid substance. 1H-NMR (DMSO-d6, 200 MHz) δ: 1.37 (t, 3H), 3.08 (q, 2H), 6.92-7.00 (m, 3H), 7.44-7.65 (m, 5H), 9.68 (s, 1H), 9.90 (s, 1H). (Compound 4).

Provenance & Evidence