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. Author manuscript; available in PMC: 2018 Nov 8.
Published in final edited form as: Nature. 2018 Jul 18;559(7714):377–381. doi: 10.1038/s41586-018-0307-8

Extended Data Fig. 2. Suggested mechanisms for observed transformations and small library of compounds synthesized.

Extended Data Fig. 2

a, Suggested mechanism for the synthesis of compound 19. b, Small library of compounds synthesized. c, Suggested mechanism for the synthesis of compound 22. d, Suggested mechanism for the synthesis of compound 21.