2,3-Dimethyl-1-butene synthesis
- Product Name:2,3-Dimethyl-1-butene
- CAS Number:563-78-0
- Molecular formula:C6H12
- Molecular Weight:84.16
187737-37-7
1 suppliers
inquiry
563-78-0
104 suppliers
$22.00/5g
Yield:563-78-0 90%
Reaction Conditions:
with diethyl aluminiumcholoride;trioctyl phosphite in toluene at -10; under 1500.15 Torr; for 5 h;Inert atmosphere;Autoclave;Reagent/catalyst;Temperature;
Steps:
1-40 Example 33
(1) Catalyst preparationThe activated 10 g molecular sieve ZSM-5 contains 1.56 g of nickel nitrate and 1.55 g.Impregnating a solution of cobalt nitrate in nitric acid, filtering, washing with water, roasting, reduction,5% Ni-5% Co/ZSM-5 catalyst was obtained by vacuum distillation;(2) Feeding7 g of 5% Ni-5% Co/ZSM-5 catalyst was added to 140 g of toluene solvent.Add 7g of trioctyl phosphite, mix and mix in a low temperature tank to cool,0.35 g of diethylaluminum chloride was added under nitrogen protection.The autoclave was evacuated to -0.01 MPa.Negative pressure presses the material into the autoclave;(3) Passing propylene gasPassing a cooling medium to a temperature of -10 ° C, and intermittently introducing 84 g of propylene gas into the autoclave at a pressure of 0.2 Mpa;(4) ReactionAfter reacting for 5 hours, the experiment was terminated and the reaction was quenched;(5) FilteringThe reaction solution is recovered by filtration;(6) RectificationDistillation separation gave 68.88 g of 2,3-dimethyl-1-butene in a yield of 90% and a selectivity of 91.5%.
References:
Shandong Xinhecheng Pharmaceutical Co., Ltd.;Fang Wanjun;Ma Xiao;Du Rongqiang;Zhong Juanjuan;Wang Ziming;Li Congcong;Dong Fengchan;Fan Guotao CN110002936, 2019, A Location in patent:Paragraph 0026-0065
513-81-5
116 suppliers
$45.00/1g
563-78-0
104 suppliers
$22.00/5g
594-60-5
39 suppliers
$70.70/5g
563-78-0
104 suppliers
$22.00/5g