Synthesis p. 1074 - 1076 (1985)
Update date:2022-08-30
Topics:
Tromelin, Anne
Demerseman, Pierre
Royer, Rene
2-Nitrobenzofurans 4 are prepared in improved yields by reacting o-hydroxybenzaldehydes 1 and bromonitromethane (2) at low temperature in order to avoid the dehydration of the aldol intermediate 3 in the alkaline condensation medium.This aldol 3 is then quantitatively dehydrated by heating in acetic anhydride.
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(1937)
