Journal
ORGANIC LETTERS
Volume 8, Issue 9, Pages 1953-1955Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol060645p
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A highly efficient alkynylation-cyclization of terminal alkynes with ortho-alkynylaryl aldehydes leading to 1-alkynyl-1H-isochromenes was developed by using a gold-phosphine complex as catalyst in water. The reaction was dually promoted by an electron-donating phosphine ligand and water and was chelation-controlled.
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