2-bromo-5-methylcyclohexane-1,3-dione

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 24 in acetic acid (540 mL) was added sodium acetate (44.3 g, 540 mmol) and thiourea (28.8 g, 378 mmol). The reaction mixture was stirred with a mechanical stirrer at 100° C. for 3 h. The reaction mixture was partially concentrated in vacuo. EtOAc was added (500 mL). The mixture was made basic with 1 M NaOH, and the layers were separated. The aqueous layer was extracted with EtOAc (2×300 mL). The combined organic layers were dried, filtered, and concentrated in vacuo to give 49.3 g of 25, which was taken on without further purification. LCMS-ESI+: calc'd for C8H11N2OS: 183.1 (M+H+); Found: 183.1 (M+H+). The reaction mixture was partially concentrated in vacuo EtOAc was added (500 mL) the layers were separated The aqueous layer was extracted with EtOAc (2×300 mL) The combined organic layers were dried filtered concentrated in vacuo

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 24 in acetic acid (540 mL) was added sodium acetate (44.3 g, 540 mmol) and thiourea (28.8 g, 378 mmol). The reaction mixture was stirred with a mechanical stirrer at 100° C. for 3 h. The reaction mixture was partially concentrated in vacuo. EtOAc was added (500 mL). The mixture was made basic with 1 M NaOH, and the layers were separated. The aqueous layer was extracted with EtOAc (2×300 mL). The combined organic layers were dried, filtered, and concentrated in vacuo to give 49.3 g of 25, which was taken on without further purification. LCMS-ESI+: calc'd for C8H1N2OS: 183.1 (M+H+); Found: 183.1 (M+H+). The reaction mixture was partially concentrated in vacuo EtOAc was added (500 mL) the layers were separated The aqueous layer was extracted with EtOAc (2×300 mL) The combined organic layers were dried filtered concentrated in vacuo

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 24 in acetic acid (540 mL) was added sodium acetate (44.3 g, 540 mmol) and thiourea (28.8 g, 378 mmol). The reaction mixture was stirred with a mechanical stirrer at 100° C. for 3 h. The reaction mixture was partially concentrated in vacuo. EtOAc was added (500 mL). The mixture was made basic with 1 M NaOH, and the layers were separated. The aqueous layer was extracted with EtOAc (2×300 mL). The combined organic layers were dried, filtered, and concentrated in vacuo to give 49.3 g of 25, which was taken on without further purification. The reaction mixture was partially concentrated in vacuo EtOAc was added (500 mL) the layers were separated The aqueous layer was extracted with EtOAc (2×300 mL) The combined organic layers were dried filtered concentrated in vacuo

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification

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

Procedure: To a stirred solution of 5-methylcyclohexane-1,3-dione (1.26 g, 10 mmol) in AcOH (20 mL) at r.t. was added bromine (1.6 g, 0.51 mL, 10 mmol) dropwise. The reaction was carried out according to Method A to give the title compound in quantitative yield as a light brown solid which was used without further purification. LCMS (ES+) 204.9 (M+H)+.

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 24 in acetic acid (540 mL) was added sodium acetate (44.3 g, 540 mmol) and thiourea (28.8 g, 378 mmol). The reaction mixture was stirred with a mechanical stirrer at 100° C. for 3 h. The reaction mixture was partially concentrated in vacuo. EtOAc was added (500 mL). The mixture was made basic with 1 M NaOH, and the layers were separated. The aqueous layer was extracted with EtOAc (2×300 mL). The combined organic layers were dried, filtered, and concentrated in vacuo to give 49.3 g of 25, which was taken on without further purification. LCMS-ESI+: calc'd for C8H11N2OS: 183.1 (M+H+); Found: 183.1 (M+H+). The reaction mixture was partially concentrated in vacuo EtOAc was added (500 mL) the layers were separated The aqueous layer was extracted with EtOAc (2×300 mL) The combined organic layers were dried filtered concentrated in vacuo

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 24 in acetic acid (540 mL) was added sodium acetate (44.3 g, 540 mmol) and thiourea (28.8 g, 378 mmol). The reaction mixture was stirred with a mechanical stirrer at 100° C. for 3 h. The reaction mixture was partially concentrated in vacuo. EtOAc was added (500 mL). The mixture was made basic with 1 M NaOH, and the layers were separated. The aqueous layer was extracted with EtOAc (2×300 mL). The combined organic layers were dried, filtered, and concentrated in vacuo to give 49.3 g of 25, which was taken on without further purification. LCMS-ESI+: calc'd for C8H1N2OS: 183.1 (M+H+); Found: 183.1 (M+H+). The reaction mixture was partially concentrated in vacuo EtOAc was added (500 mL) the layers were separated The aqueous layer was extracted with EtOAc (2×300 mL) The combined organic layers were dried filtered concentrated in vacuo

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

Procedure: To a solution of 5-methyl-1,3-cyclohexanedione (23) (45.4 g, 360 mmol) in acetic acid (540 mL) was added bromine (19.4 mL, 378 mmol) over 5 min. After 30 min of stirring (with mechanical stirrer), the reaction mixture was filtered. The solid was left under high vacuum overnight and used in the subsequent step without further purification. the reaction mixture was filtered The solid was left under high vacuum overnight used in the subsequent step without further purification