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A new method for aromatization of Δ~(5(10))-steroidal C_3-dimethyl ketalswith pyridinium hydrobromide perbromide (PHP.Py·HBr·Br_2) to aromatic Aring steroids in high yield (90-95%) is described.
A new method for aromatization of Δ ~ (5 (10)) - steroidal C_3-dimethyl ketals with pyridinium hydrobromide perbromide (PHP.Py · HBr · Br_2) to aromatic Aring steroids in high yield (90-95%) is described.