2-chloro-2,2-difluoroacetyl chloride

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

Procedure: In analogy to Example 58, the title compound was prepared using 4-amino-thiophene-3-carboxylic acid methyl ester, chlorodifluoroacetyl chloride and 4-fluoro-4′-hydroxybiphenyl. MS (m/e): 406.1 (M−H).

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

Procedure: In analogy to Example 58, the title compound was prepared using 4-amino-thiophene-3-carboxylic acid methyl ester, chlorodifluoroacetyl chloride and 4-fluoro-4′-hydroxybiphenyl. MS (m/e): 406.1 (M−H).

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

Procedure: According to general procedures outlined above, 3-methyl-4-aminophenyl N-methylcarbamate (2.3g., 0.0128 mole) was reacted with chlorodifluoroacetyl chloride (2.1g., 0.014 mole) in the presence of triethylamine (1.4g., 0.014 mole) and benzene. The product was a light tan solid (1.6g., m.p. 156°-58.5° C.).

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

Procedure: In analogy to Example 58, the title compound was prepared using 4-amino-thiophene-3-carboxylic acid methyl ester, chlorodifluoroacetyl chloride and 4-fluoro-4′-hydroxybiphenyl. MS (m/e): 406.1 (M−H).