Citation:
Lin Jiwen, Wei Chunhong. SYNTHESIS OF 4,4'-TETRAMETHYLDIAMINO-DIPHENYLMETHANE[J]. Chinese Journal of Applied Chemistry,
;1987, 4(6): 88-89.
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The synthetic method of 4,4'-tetramethyldiaminodiphenylmethane has been improved using oxalic acid and hydrochloric acid as catalysts. The optimum reaction conditions of the synthesis are:(1) the molar ratio of N,N-dimethylaniline to formaldehyde:1.7:1, (2) weight of oxalic acld and hydrochloric acid:74% and 14% to the weight of N,N-dimethylaniline, respectively and (3) reaction time:3 hours.
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