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Long known in various metal-complexed forms, β-octabromo-meso-tris(pentafluorophenyl)corrole, H 3 [Br 8 TPFPC], has not been available as a free ligand until now. It can be prepared in high yield (86%) via reductive demetalation (conc. H 2 SO 4 , FeCl 2 ) of Mn [Br 8 TPFPC]. Interestingly, the same conditions did not result in demetalation of the analogous copper complex, which may be contrasted to the behavior of many other copper corroles, which demetalate cleanly. X-ray crystallographic analysis revealed a unique "half-saddled" conformation, wherein two of the pyrrole rings on one side of the direct pyrrole-pyrrole linkage are strongly tilted up and down relative to each other, whereas the other two pyrrole rings are roughly in the mean plane of the macrocycle.

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A TMSOTf promoted addition of an N-tert-butanesulfinyl α-imino ester to five-membered aromatic heterocycles furnishes optically active heteroaromatic glycine derivatives with moderate-to-good yield in diastereomeric ratios up to