Chlorosuccinimide → Methyl 2,7-dichloro-3-(3-pyridyl)-5,6-dihydroindolizinecarboxylate

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Reaction Steps

Methyl 2,7-dichloro-3-(3-pyridyl)-5,6-dihydroindolizinecarboxylate is prepared as in Example 39, from 1 g of methyl 3-(3-pyridyl)-5,6,7,8-tetrahydroindolizine-1-carboxylate and 1.56 g of N-chlorosuccinimide. 0.7 g of methyl 2,7-dichloro-3-(3-pyridyl)-5,6-dihydroindolizine-1-carboxylate are thus obtained in the form of an orange oil (Rf=0.33; thin layer chromatography on silica gel; eluent: 8/2 dichloromethane/ethyl acetate).

Provenance & Evidence