Brønsted Acid‐Catalyzed Intramolecular 7‐<i>endo</i> Hydroarylation Reaction of 1,5‐Diaryl‐1‐pentynes
作者:Kosho Makino、Shunsuke Sueki、Masahiro Anada
DOI:10.1002/adsc.202300220
日期:2023.5.12
A Brønstedacid-catalyzed, transition metal-free intramolecular 7-endo hydroarylation reaction of 1,5-diaryl-1-pentynes has been developed. The use of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as a solvent was found to be critical for this process. Using the present methodology, we have accomplished the synthesis of KGP-18, an analogue of the anticancer natural product combretastatin A4.