Michael Reactions of α-Unsubstituted Trisubstituted 1H-Pyrroles |
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Authors: | Rainer Lünd Reinhard Neier |
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Institution: | Rainer Lüönd,Reinhard Neier |
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Abstract: | To obtain stable derivatives of α-unsubstituted pyrroles, the reaction of the test pyrrole 9 with a series of chalcones 14a – h were studied. Michael adducts 16b – h could be isolated. In order to synthesize coloured derivatives, the reaction of different pyrroles 9, 21, 23 , and 25 with diphenylpropynone 19 was investigated. In these cases, too, Michael-addition products were formed. The intense absorption band around 400 nm makes the identification of these derivatives easy. |
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