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. 2020 Apr 30;59(24):9767–9772. doi: 10.1002/anie.202004452

Scheme 1.

Scheme 1

Synthesis of SLIM 9.. a) 1) n‐BuLi, TMEDA, Et2O, rt, 0.5 h; 2) Ntert‐butoxycarbonylpyridinium tert‐butanolate, Et2O, 24 h. b) LiAlH4, THF, rt, 1 h. c) Ph3P, diethyl azodicarboxylate, THF, 0 °C, 0.5 h. d) 1) CF3COOH, CH2Cl2, rt, 2 h; 2) SnCl2, THF, 0.3 h. e) CH3CN, 60 °C, 24 h.