成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

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

1,1-Dimethylpropargylamine Related Search: