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1,3-Diaryl propargyl alcohols undergo smooth intramolecular Friedel–Crafts cyclization with triethylsilane in the presence of 10mol% iodine 3-aryl-1H-indene derivatives in good yields in short reaction times. This is the first example on the synthesis of substituted indenes from 1,3-diaryl propargyl alcohols. The use of inexpensive and readily available molecular iodine makes this method quite simple,...
Aryl propargyl alcohols undergo smooth alkynylation with alkynylsilanes in the presence of 10mol% of iodine under mild and neutral conditions to produce 1,4-diynes in excellent yields with high selectivity. The use of readily available molecular iodine makes this method simple, convenient, cost-effective and practical.
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