Related Products of 699-03-6, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 699-03-6, name is 1-(4-Bromophenyl)-N-methylmethanamine, This compound has unique chemical properties. The synthetic route is as follows.
a) 4-(4-Methylaminomethyl)phenyl-4-hydroxycyclohexanone-ethylene ketal A solution of 94 g (0.47 mol) of 4-bromo-(N-methyl)-benzylamine in 460 ml of dry tetrahydrofuran is combined first with 300 ml (0.48 mol) of a 1.6 molar solution of n-butyl lithium in hexane and then with 52.5 g (0.48 mol) of trimethylchlorosilane, under a nitrogen atmosphere and at to -25 C. The reaction mixture is stirred for a further 15 minutes at this temperature and then cooled to -75 C. Then another 320 ml (0.51 mol) of a 1.6 molar solution of n-butyllithium in hexane are added so that the temperature does not exceed -70 C. The mixture is stirred for a further 20 minutes at -75 C. and then, within 20 minutes, mixed with a solution of 76 g (0.47 mol) of 1,4-cyclohexanedione-monoethylene ketal in 200 ml of tetrahydrofuran, whilst the temperature should not exceed -65 C. The reaction mixture is then stirred first for 30 minutes at -70 C. and then without external cooling until a temperature of +20 C. is reached. It is then decomposed in ice cold aqueous ammonium chloride solution and extracted several times with methylene chloride. The combined organic extracts are dried with sodium sulphate, the solvent is eliminated and the residue remaining is recrystallized from diisopropylether. 77 g (59% of theory) of 4-(4-methylaminomethyl)phenyl-4-hydroxycyclohexanone-ethylene ketal are obtained, melting point 95-97 C.
The chemical industry reduces the impact on the environment during synthesis 1-(4-Bromophenyl)-N-methylmethanamine. I believe this compound will play a more active role in future production and life.
Reference:
Patent; Karl Thomae GmbH; US5726205; (1998); A;,
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