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. Author manuscript; available in PMC: 2024 Jan 26.
Published in final edited form as: Tetrahedron. 2022 Dec 17;131:133226. doi: 10.1016/j.tet.2022.133226

Scheme 4.

Scheme 4.

Oxidation of amines (13a-1) in the presence of benzyl alcohol (12a) by 1 to afford imines (16h-q). a Yields are isolated yields of the reaction run on 2.0 mmol scale relative to the benzyl alcohol starting material using 2.0 molar equiv of 1, 1.2 equiv of amine, 3 equiv of p-TsOH, 1 mmol of MgSO4, and 3 equiv of K2CO3 after an extractive work-up.