Fig. 2: Substrate scope of the aza-Paternò-Büchi reactions with H–Hexo selectivity. | Nature Communications

Fig. 2: Substrate scope of the aza-Paternò-Büchi reactions with H–Hexo selectivity.

From: Accessing ladder-shape azetidine-fused indoline pentacycles through intermolecular regiodivergent aza-Paternò–Büchi reactions

Fig. 2

Reaction conditions: 1 (0.2 mmol), 2 (0.1 mmol), and thioxanthone (0.01 mmol) in MeCN (2 mL) under irradiation with purple LEDs (λmax = 405 nm) at room temperature under nitrogen for 24 h. Boc tert-butoxycarbonyl, Ac acetyl, TBS tert-butyl(dimethyl)silyl, Ts tosyl.

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