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Some Reactions of α-Phthalimidonitriles Including Those Leading to the Synthesis of α-Aminoamidoximes and α-Aminothioamides 1

✍ Scribed by Peterson, Paul E.; Niemann, Carl

Book ID
125463425
Publisher
American Chemical Society
Year
1957
Tongue
English
Weight
1006 KB
Volume
79
Category
Article
ISSN
0002-7863

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Reaction of the ten-butyl ester of 3-methoxy-2-pyrrolecarboxylic acid with singlet oxygen yields a hydroperoxide intermediate which undergoes coupling with pyrroles to yield precursors of prodigiosin and ring A analogs, readily convertible to the corresponding tripyrromethenes.