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. Author manuscript; available in PMC: 2010 Apr 19.
Published in final edited form as: Chem Rev. 2008 May 20;108(6):1982–2014. doi: 10.1021/cr078198u

Scheme 11.a.

Scheme 11.a

a Reagents and conditions: (a) MnO2, NaCN, Me2NH, i-PrOH; (b) n-BuLi, TMEDA, −104 °C; B(OMe)3, THF; AcOH, H2O2; (c) TBSCl, imidazole; (d) n-BuLi, TMEDA, −104 °C, Et2O, I2; (e) Me3OBF4, Na2HPO4, MeCN; (f) TsCl, py; (g) i. s-BuLi, TMEDA, THF, −90 °C; ii. CuCN, −90 to −20 °C.