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. Author manuscript; available in PMC: 2014 Oct 24.
Published in final edited form as: European J Org Chem. 2011 Jul;2011(20-21):3815–3824. doi: 10.1002/ejoc.201100428

Table 2.

Comparison of the reaction times for the reaction of 1 and 2a.[a]

Entry Ligand Time [min] Conv. [%][b] Yield [%][b]
1 SIPr 15 30 29
2 SIPr 30 75 72
3 SIPr 60 100 98
4 IMes 15 98 98
[a]

Reaction conditions: 0.1 M diyne, 0.1 M cyanamide, 5 mol-% [Ni(cod)2], 10 mol-% ligand, PhMe, room temp.

[b]

Determined by GC relative to naphthalene as an internal standard.