Studies on the Reaction between Polynitrobenzene Compounds and Active Methylene Groups. IX. On the Janovsky Complexes derived from Some I-Substituted 2, 4, 6-Trinitrobenzene Derivatives

抄録

Janovsky reaction of picrylchloride (PC) performed in the acetone solution containing sodium methoxide gave the Janovsky complex (Ic) and no evidence of the formation of an alternative one (IIc) was obtainable. 2, 4, 6-Trinitroanisole (TNA) also gave the analogus result. In the case of sodium 2, 4, 6-trinitrobenzene-l-sulfonate, Id was the major complex and the other one (IId) was also formed. The stability of the Janovsky complexes of 1, 3, 5-trinitrobenzene (TNB), PC and TNA were studied and their large stability constants were noticed. The ratios of the formation constants, K_TNB/K_TNA, K_TNB/K_PC and K_PC/K_TNA, were determined as 3.3, 1.6 and 2.1, respectively.