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. Author manuscript; available in PMC: 2013 Jul 11.
Published in final edited form as: J Am Chem Soc. 2012 Jun 27;134(27):11128–11131. doi: 10.1021/ja305117m

Scheme 1. Catalyst Synthesis.

Scheme 1

(a) EtN(i-Pr)2, Tf2O, CH2Cl2, −78 °C; 91%. (b) KCN, Ni(PPh3)4, CH3CN, 70 °C; 86%. (c) BH3•THF, 0 °C, Δ; HCl(aq), THF, δ; 92%. (d) CH3C(OMe)2NMe2, CH3CN; 78%.