The direct introduction of the aldehyde group into m-nitrophenol by a method using N- methylformanilide and phosphorus oxychloride produced a water soluble green crystalline compound which has not yet been characterized. An attempt to use a Reimer-Tiemann reaction according to Armstrong and Richardson'produced a small yield of tris-m- nitrophenylorthoformate which could not be rearranged. The path finally adopted to yield ...
