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. Author manuscript; available in PMC: 2021 Jan 25.
Published in final edited form as: J Org Chem. 2009 Sep 18;74(18):7007–7012. doi: 10.1021/jo9012805

Scheme 2.

Scheme 2.

Synthesis of Photochemical Radical Precursors 2a and 2ba

aReagents and conditions: (a) 5% Rh/Al2O3, H2 (45 psi), MeOH; (b) (i) pTSA, dimethoxy propane, DMF, (ii) BzCl; (c) TFA/H2O (1:1).