Ru(II)-catalyzed ring expansion of alkynylcyclopropanes in the presence of sulfonamides

Ru(II)-catalyzed ring expansion of alkynylcyclopropanes to alkylidenecyclobutanamines using a variety of cyclopropane and sulfonamide substrates was developed and shown to give moderate to excellent yields.

Graphical AbstractRu(II)-catalyzed ring expansion of alkynylcyclopropanes to alkylidenecyclobutanamines has been developed, where sulfonamides are needed.Figure optionsDownload as PowerPoint slide