Related Products of 636-53-3, These common heterocyclic compound, 636-53-3, name is Diethyl isophthalate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Will 6.8Kg of diethyl isophthalate, 24.0 kg of 2,2,6,6-tetramethyl-4-aminopiperidine was added to a 50 liter reactorIn the reactor all the materials off the entrance. The reaction was carried out at 190 C for 2 hours and then at 230 C for 6 hours. The temperature was lowered to below 180 C, and excess 2,2,6,6-tetramethyl-4-aminopiperidine was recovered by vacuum distillation under a vacuum pump. Then use water to generateN, N’-bis (2,2,6,6-tetramethyl-4-piperidinyl) -1,3-benzenedicarboxamide, filtered and dried to give 12.4 kg of acicular white crystalline product , Yield 91.6%.
Statistics shows that Diethyl isophthalate is playing an increasingly important role. we look forward to future research findings about 636-53-3.
Reference:
Patent; Xiangtan University; Luo Zhiqiang; Zhang Lingjun; Zhang Jing; Ji Yongsheng; Ji Changfu; Zeng Yang; Liu Mengyan; Zhou Ji; Liu Minna; Wang Zhe; (7 pag.)CN106905225; (2017); A;,
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