Abstract

AbstractEin früher durch Bromierung von 2,4‐Dimethyl‐3‐pyrrolcarbonsäure‐ethylester (1) erhaltener dreikerniger Pyrrolfarbstoff wurde als 5‐(4‐Ethoxycarbonyl‐3,5‐dimethyl‐2‐pyrrolyl)‐4,3′,5′‐trimethyl‐2′,2′ ‐dipyrromethylen‐3,4′ ‐dicarbonsäure‐diethylester (7) identifiziert.

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