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. 2020 Dec 7;12(4):1327–1342. doi: 10.1039/d0sc04301j

Fig. 2. Selected reported strategies for the synthesis of C3- and/or C4-substituted 2OG derivatives. (a) Alkylation reactions,25 (b) Michael reactions,27 and (b and c) oxidation reactions28a–c,29 have been employed in syntheses of C3/C4-substituted 2OG derivatives (6).

Fig. 2