METHOD OF 3-NITROSALICYLIC ALDEHYDE SYNTHESIS

摘要

FIELD: organic chemistry. SUBSTANCE: product: 3-nitrosalicylic aldehyde, m. p. is 109 C, yield is 75%. Reagent 1: salicylic aldehyde. Reagent 2: NaNO₂. Reaction conditions: in the medium of CH₃COOH and glacial CH₃COOH in the presence of Cu(OCOCH₃)₂·H₂O at the molar ratio salicylic aldehyde : Cu(OCOCH₃)₂·H₂O:NaNO₂:CH₃COOH = 1:(0.5-0.6):(2-2.5):(4-5), at 10-15 C following by oxidation of intermediate cupric complex of 3-nitrosalicylic aldehyde. Product is used in air-cosmic objects. EFFECT: improved method of synthesis.