Answers are grounded in this paper and cite their sources.
A cationic rhodium(I)/rac-BINAP complex catalyzes chemo- and regioselective formal cross-cyclotrimerizations of alkynes with enol ethers or acetates. Commercially available and cheap liquid enol ethers and acetates could be used as convenient gaseous alkyne equivalents in the present rhodium catalyses.
No takes yet. Share an insight, caveat, or question.
Hara et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: