Answers are grounded in this paper and cite their sources.
A class of 3,4‐diarylthiophenes was prepared in excellent yield (80–91 %) by oxidation of 3,4‐diaryl‐2,5‐dihydrothiophenes with CuBr2. The approach is also available for the synthesis of 3,4‐diarylpyrroles and 3,4‐diarylfuran. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
No takes yet. Share an insight, caveat, or question.
Dang et al. (2007) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: