isothiocyanatomethylbenzene

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of 5-[4-[6-(8-aminonaphthalen-2-yloxy)-1-methyl-1H-benzimidazol-2-ylmethoxy]benzyl]thiazolidine-2,4-dione (0.4 g) in anhydrous tetrahydrofuran (10 ml) was added benzyl isothiocyanate (0.24 g) and the mixture was stirred at room temperature for 5.5 hours and then at 50° C. for 9 hours. The reaction mixture was concentrated. The residue was chromatographed on a silica gel column using ethyl acetate:n-hexane=1:1→3:1 as the eluant to afford the title compound (0.36 g, Rf=0.53: thin layer chromatography on a silica gel plate using ethyl acetate:n-hexane=3:1). at 50° C. for 9 hours The reaction mixture was concentrated The residue was chromatographed on a silica gel column

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

Procedure: A mixture of 5-[4-[6-(4-aminophenoxy)-1-methyl-1H-benzimidazol-2-ylmethoxy]benzyl]thiazolidine-2,4-dione dihydrochloride (400 mg), benzyl isothiocyanate (248 mg), triethylamine (153 mg) and anhydrous N,N-dimethylformamide (8 ml) was stirred at room temperature for 3.5 hours. The reaction mixture was concentrated and partitioned between ethyl acetate and water. The extract was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate and then concentrated. The residue was chromatographed on a silica gel column using ethyl acetate:n-hexane=2:1→3:1→4:1 as the eluant to afford the title compound (291 mg, mp 174.8-177.2° C.). The reaction mixture was concentrated partitioned between ethyl acetate and water The extract was washed with saturated aqueous sodium chloride solution dried over anhydrous sodium sulfate concentrated The residue was chromatographed on a silica gel column