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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Nat Synth. 2022 Apr 11;1(5):352–364. doi: 10.1038/s44160-022-00052-1

Fig. 5 |. Select developments in single-atom deletions from nitrogenous heterocycles.

Fig. 5 |

a, Representative examples of a carbon deletion reaction in nitrogen heterocycles45. b, Representative examples of nitrogen deletion reactions applied to azacyclic frameworks47,48. Deleted atoms are circled, and contracted rings are highlighted in blue for clarity. AGE, advanced glycation end product; DBU, diazabicycloundecene. r.t., room temperature.