4-chloro-3H-2-benzofuran-1-one

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-chloroisobenzofuran-1(3H)-one (10 g, 59.32 mmol), (E)-2,2′-(diazene-1,2-diyl)bis(2-methylpropanenitrile) (0.974 g, 5.93 mmol) and 1-bromopyrrolidine-2,5-dione (11.61 g, 65.25 mmol) were dissolved CCl4 (100 mL) and heated at reflux for 2 hours. The reaction was cooled and filtered, the filtrate was evaporated to the desired compound as a yellow gum (14.20 g, 97% yield); 1H NMR (400.132 MHz, CDCl3) δ 7.32 (1H, s), 7.61 (1H, t), 7.73 (1H, d), 7.88 (1H, d); m/z (LC-MS, ESI+), RT=2.28 (M+H not detected). heated at reflux for 2 hours The reaction was cooled filtered

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-chloroisobenzofuran-1(3H)-one (10 g, 59.32 mmol), (E)-2,2′-(diazene-1,2-diyl)bis(2-methylpropanenitrile) (0.974 g, 5.93 mmol) and 1-bromopyrrolidine-2,5-dione (11.61 g, 65.25 mmol) were dissolved CCl4 (100 mL) and heated at reflux for 2 hours. The reaction was cooled and filtered, the filtrate was evaporated to the desired compound as a yellow gum (14.20 g, 97% yield); 1H NMR (400.132 MHz, CDCl3) δ 7.32 (1H, s), 7.61 (1H, t), 7.73 (1H, d), 7.88 (1H, d); m/z (LC-MS, ESI+), RT=2.28 (M+H not detected). heated at reflux for 2 hours The reaction was cooled filtered

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-chloroisobenzofuran-1(3H)-one (10 g, 59.32 mmol), (E)-2,2′-(diazene-1,2-diyl)bis(2-methylpropanenitrile) (0.974 g, 5.93 mmol) and 1-bromopyrrolidine-2,5-dione (11.61 g, 65.25 mmol) were dissolved CCl4 (100 mL) and heated at reflux for 2 hours. The reaction was cooled and filtered, the filtrate was evaporated to the desired compound as a yellow gum (14.20 g, 97% yield); 1H NMR (400.132 MHz, CDCl3) δ 7.32 (1H, s), 7.61 (1H, t), 7.73 (1H, d), 7.88 (1H, d); m/z (LC-MS, ESI+), RT=2.28 (M+H not detected). heated at reflux for 2 hours The reaction was cooled filtered