2-(4-methoxyphenyl)acetamide

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

Procedure: Title compound was prepared from [4-bromo-2-(2-bromoacetyl)phenoxy]acetic acid ethyl ester and 2-(4-methoxyphenyl)acetamide according to GP5 and GP3: LC/MS (an10p8) Rt 2.40 min, m/z 418 [M+H]+; 1H NMR (CDCl3): δ 3.72 (s, 3H), 4.14 (s, 1H), 4.85 (s, 1H), 6.92 (m, 2H), 7.02 (d, 1H), 7.2 (d, 1H), 7.23 (d, 1H), 7.44 (d, 1H), 8.05 (s, 1H), 8.67 (s, 1H), 13.2 (br s, 1H).

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 4-methoxyphenylacetamide (5.06 g, 30.0 mmol) in toluene (10 mL) was added 2,6-di-t-butyl-4-hydroxytoluene (132 mg, 0.60 mmol) and chlorocarbonylsulfenyl chloride (5.52 mL, 60.0 mmol). The resulting mixture was warmed to 115° C. for 80 min during which time hydrochloric acid gas was evolved resulting in a yellow solution. To this solution additional chlorcarbonyl-sulfenylchloride (1.38 mL, 15.00 mmoles) was added and the mixture heated for 40 min and allowed to stand at room temperature overnight. The reaction mixture was cooled to 0° C. and stirred for 10 min before being filtered to remove a beige solid. The solid was washed with cold toluene (2×10 mL) and the filtrate was concentrated and purified by flash chromatography (silica gel, 20% ethyl acetate/hexanes) which afforded 5-(4-methoxy-benzyl)-[1,3,4]oxathiazol-2-one (1.12 g, 17%) as a yellow solid. was evolved resulting in a yellow solution the mixture heated for 40 min before being filtered to remove a beige solid The solid was washed with cold toluene (2×10 mL) the filtrate was concentrated purified by flash chromatography (silica gel, 20% ethyl acetate/hexanes) which

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 4-methoxyphenylacetamide (5.06 g, 30.0 mmol) in toluene (10 mL) was added 2,6-di-t-butyl-4-hydroxytoluene (132 mg, 0.60 mmol) and chlorocarbonylsulfenyl chloride (5.52 mL, 60.0 mmol). The resulting mixture was warmed to 115° C. for 80 min during which time hydrochloric acid gas was evolved resulting in a yellow solution. To this solution additional chlorcarbonyl-sulfenylchloride (1.38 mL, 15.00 mmoles) was added and the mixture heated for 40 min and allowed to stand at room temperature overnight. The reaction mixture was cooled to 0° C. and stirred for 10 min before being filtered to remove a beige solid. The solid was washed with cold toluene (2×10 mL) and the filtrate was concentrated and purified by flash chromatography (silica gel, 20% ethyl acetate/hexanes) which afforded 5-(4-methoxy-benzyl)-[1,3,4]oxathiazol-2-one (1.12 g, 17%) as a yellow solid. was evolved resulting in a yellow solution the mixture heated for 40 min before being filtered to remove a beige solid The solid was washed with cold toluene (2×10 mL) the filtrate was concentrated purified by flash chromatography (silica gel, 20% ethyl acetate/hexanes) which

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

Procedure: A solution of 2-(4-methoxyphenyl)acetic acid (500 mg, 3.00 mmol) in DCM (30 ml) was added thionyl chloride (0.4 ml, 4.5 mmol) at 0° C. The reaction mixture was allowed to warm up to room temperature and continued to stirred overnight. Then aqueous ammonia (2 ml) was added to the reaction mixture. The white solid forming was filtered and dried under vacuum to obtained 350 mg (70%) of 2-(4-methoxyphenyl)acetamide as a white solid. The white solid forming was filtered dried under vacuum

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

Procedure: A solution of 2-(4-methoxyphenyl)acetic acid (500 mg, 3.00 mmol) in DCM (30 ml) was added thionyl chloride (0.4 ml, 4.5 mmol) at 0° C. The reaction mixture was allowed to warm up to room temperature and continued to stirred overnight. Then aqueous ammonia (2 ml) was added to the reaction mixture. The white solid forming was filtered and dried under vacuum to obtained 350 mg (70%) of 2-(4-methoxyphenyl)acetamide as a white solid. The white solid forming was filtered dried under vacuum