2-chloro-3-methylbutanoyl chloride

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

Procedure: 10.25 g of 2-amino-3-trifluoromethyl benzoic acid in 20 ml of toluene and 18.6 g of 2-chloro-3-methyl butanoyl chloride (prepared by J. Org. Chem., Vol. 40, p. 3420 (1975)) were mixed together, and the procedure of Example 10 of Belgian Patent No. 896,941 was followed for the preparation of 11.9 g of 2-(1-chloro-2-methylpropyl)-8-(trifuoromethy)-4H-3,1-benzoxazin-4-one melting at 78°-80° C.

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

Procedure: 10.25 g of 2-amino-3-trifluoromethyl benzoic acid in 20 ml of toluene and 18.6 g of 2-chloro-3-methyl butanoyl chloride (prepared by J. Org. Chem., Vol. 40, p. 3420 (1975)) were mixed together, and the procedure of Example 10 of Belgian Patent No. 896,941 was followed for the preparation of 11.9 g of 2-(1-chloro-2-methylpropyl)-8-(trifuoromethy)-4H-3,1-benzoxazin-4-one melting at 78°-80° C.