Scheme 376. Benzene-Fused Doubly N-Confused Porphyrins.
Reagents and conditions: (a)742tert-butyl 5-acetoxymethyl-3,4-diethylpyrrole-2-carboxylate, catalytic p-TsOH·H2O, AcOH, rt, 3 h; (b) TFA, N2, CH2(OMe)2, DCM, p-chloranil.
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