Palladium-Catalyzed Coupling of 3-Indolyl Triflate. Syntheses of 3-Vinyl and 3-Alkynylindoles

Gordon W. Gribble, Samuel C. Conway

Synthetic Communications · 1992 · 45 citations · 32 references

Concepts

Abstract

Abstract Palladium-catalyzed coupling of 1-(phenylsulfonyl)indol-3-yl trifluoromethanesulfonate (triflate) (1) with terminal alkenes and alkynes gives 3-vinyl (2) and 3-alkynylindoles in 45—93% yields. An attempt to generate 2, 3-indolyne 22 from 2-trimethylsilyl-3-indolyl triflate 20 gives indigo (23).

References

32