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以二甲亚砜为溶剂 ,用芳醛与芳胺、亚磷酸一步合成了 9个未见文献报道的 N-芳基 -α-氨基苄基膦酸 ,并研究了它们与锌盐复配在 p H=8的碱性介质中对 A3钢的缓蚀作用 .试验表明 ,以二甲亚砜为溶剂来合成膦酸是一种较为理想的合成手段 ;N-芳基 -α-氨基苄基膦酸与锌盐具有较好的协同作用
Nine novel N-aryl-α-aminobenzylphosphonic acids have been synthesized in one step from aryl aldehydes and aromatic amines and phosphorous acid using dimethyl sulfoxide as solvent. p H = 8 in alkaline medium on the corrosion inhibition of A3 steel.Experiments show that the use of dimethyl sulfoxide as a solvent to synthesize phosphonic acid is an ideal means of synthesis; N- aryl-α-aminobenzyl Phosphonic acid and zinc salts have better synergistic effect