Pyridine hydrobromide perbromide mediated regioselective heterocyclization of ortho-cyclohexenyl phenols1 Krishna C. Majumdar and Anup K. Kundu Abstract: A number of 3,4-benzo-9-bromo-2-oxabicyclo[3.3. Ilnonanes (9a-11) are synthesized in almost quantitative yields by regioselective heterocyclization of ort11o-cyclohexenyl phenols (80-11).
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