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ChemicalBook CAS DataBase List 1,1-Dimethylpropargylamine
2978-58-7

1,1-Dimethylpropargylamine synthesis

4synthesis methods
-

Yield:2978-58-7 94%

Reaction Conditions:

with ammonia;silver nitrate in water at 120; under 760.051 Torr; for 6 h;Temperature;

Steps:

1.2 Step 2: Synthesis of 3-amino-3-methylbutyne

as shown in picture 2,The silver nitrate and the 3-chloro-3-methylbutyne synthesized in Step 1 were successively put into the ammonia solution reactor.Stirring,Cooling to 0°C,Then ammonia is introduced into the ammonia solution reactor,Liquid ammonia temperature is controlled at a thermodynamic temperature T = 25°C,After the ammonia has ended,Insulation reaction for 6 hours,After the reaction is over,Stir in water,Then it is transferred to distillation pot for atmospheric distillation.When the distillation temperature reaches 120°C,Distillation is over,When the circulating water of the ammonia solution reactor is cooled to 30°C,Combine the front, middle and back distillates together and transfer them to the washing kettle.Add supersaturated saline and stand stillLayered,3-amino-3-methylbutyne was obtained (yield 94%, purity 99%);

References:

CN107903181,2018,A Location in patent:Paragraph 0009-0010; 0041-0043; 0049

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