Abstract
The condensation of
5,5'-diformyl-3,4,3',4'-tetramethyl-2,2'-dipyrrylketone (XIb) with
3,4,3',4'-tetramethyl-2,2'-dipyrrylmethae (XIVb) has
produced meso-oxy-l,2,3,4,5,6,7,8-octamethylporphin in 63% yield. The
tautomeric structure of this compound is discussed and its spectroscopic
properties compared with an early intermediate in the oxidative breakdown of
haemoglobin to give bile pigment.
Cited by
62 articles.
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