Table 1.
Photocatalytic Radical Hydroarylation of Aromatics: Scope of Spirocyclic Productsa
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Reaction conditions: (het)arylhalide–arene (1 equiv), P1 (5 mol %), i-Pr2NEt (3 equiv), MeCN/H2O (1:1 v/v, 15 mL/mmol), blue LEDs, 23 °C, 16 h. Isolated yields shown.
Reaction conducted with 10 equiv of i-Pr2NEt.
4:1 d.r., isolated yield of major diastereomer shown.
1.8:1 d.r., isolated yield of combined diastereomers shown; para-chlorobenzene dearomatization was followed by chloride solvolysis.