γ‐Nitro‐γ‐butyrolactoneBy oxidation of 3‐(1‐nitro‐2‐oxocyclohexyl)propanal (1) with KMnO4, besides 3‐(1′‐nitro‐2′‐oxocyclohexyl)pripionic acid (2), the complete hydrolysis product 4‐oxononanedioic acid (4) and the oxidized semi‐hydrolysis product 5‐(2‐nitro‐5‐oxotetrahydro‐2‐furyl)pentanoic acid (3) were formed. The crystalline 3 decomposes at r.t. forming 4 and nitrous gases; its structure was established by X‐ray determination.
ZURCHER, ALOIS;HESSE, MANFRED, HELV. CHIM. ACTA, 70,(1987) N 7, 1937-1943