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The first facile and practical silver-mediated cascade reaction of arylpropiolic acids with diarylphosphine oxides has been developed, providing a general, one step approach to structurally sophisticated 2-phosphinobenzo[b]phosphole oxide frameworks of importance in materials science via sequential decarboxylative C-P cross-coupling and C-H/P-H functionalization with operational simplicity and excellent functional group compatibility.
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Hu et al. (2015) studied this question.
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