Direct Syntheses of Benzofuran-2(3H)-ones and Benzofuran-3(2H)-ones from 1-(2-Hydroxyphenyl)alkan-1-ones by CuBr2 or CuCl2
2007
New syntheses of benzofuran-2(3H)-ones and benzofuran-3(211)-ones from l-(2-hydroxyphenyl)alkan-1-ones via oxidative cyclization by CuBr 2 or CuCl 2 are described. A new synthesis of 1H-isochromene-1,4(3H)-diones via similar procedures is also described.
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