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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Chem Sci. 2012 May;3(5):1589–1593. doi: 10.1039/C2SC01134D

Scheme 4.

Scheme 4

Enantioselective cyclopropenation of aliphatic alkynes 1-hexene and trimethylsilylacetylene. Rh2(S-TCPTTL)4= dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate]; a) Isolated yield. b) Yield by 1H NMR. c) Yield by GC.