Process For Preparing 2 Alkyl 3 Aroyl 5 Nitro Benzofurans

Abstract: The present invention relates to a process for the preparation of a compound of formula (I), wherein R1 is selected from C1-6-alkyl, C3-6-cycloaIkyl and aralkyl, and wherein R2 at each occurrence independently is halogen or C1-6-alkyl, and m is an integer from 0 to 4, Q is selected from halogen, -NO2 and -NR3R4, wherein R3 and R4 are independently selected from hydrogen, C1-6-alkyl, C3-6-cycloalkyI, aryl, aralkyl, mesyl and tosyl, or wherein R3 and R4together form a C4.6-alkylene group, Y at each occurrence is hydrogen or a hydroxy protection group W that can be hydrolytically cleaved under acidic conditions, and n is an integer from 1 to 3, and n is an integer from 1 to 3, with the proviso that n and m together are not greater than 5.

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