Welcome to chemicalbook! 400-158-6606 Inquriy Try our best to find the right business for you. Messages Do not miss inquiry messages Please log in to view all inquiry messages. My chemicalbook Welcome back! Structured search 18162-48-6872-50-4Methylene ChloridenaphthaleneTHFTitanium Dioxide ChemicalBook CAS DataBase List ALPHA,P-DIMETHYLSTYRENE ALPHA,P-DIMETHYLSTYRENE synthesis 13synthesis methods Product Name:ALPHA,P-DIMETHYLSTYRENE CAS Number:1195-32-0 Molecular formula:C10H12 Molecular Weight:132.2 By passing a stream of p-cymene and water vapors over activated aluminum oxide at 730°C. 1779-49-3 613 suppliers $5.00/10g 122-00-9 Synthesis 122-00-9 697 suppliers $5.00/25g 1195-32-0 97 suppliers $50.00/1 SAMPLE-K - Yield:1195-32-0 80% Reaction Conditions: Stage #1:Methyltriphenylphosphonium bromide with sodium hydride in tetrahydrofuran at 70; for 0.8 h;Stage #2:para-methylacetophenone in tetrahydrofuran at 75; for 10 h;Cooling with ice;Temperature; Steps: 3.1; 4.1 (1) Synthesis of 2-(4-methylphenyl)-1-propene:Add sodium hydride (1.2 g, 0.03 mol) and methyltriphenylphosphonium bromide (8.6 g, 0.036 mol) to 70 mL of anhydrous tetrahydrofuran, stir at 70°C for 0.8 hours; then add under ice-water bath conditions 20 mL of a 1.5 mol/L p-methylacetophenone solution in tetrahydrofuran, heated to 75°C for 10 hours to obtain a reaction mixture; add dilute hydrochloric acid to the reaction mixture to quench the reaction, and adjust the pH with dilute hydrochloric acid To neutrality, and finally extract three times with petroleum ether to obtain organic phase A, the organic phase A is dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and column chromatography with petroleum ether to obtain 2-(4-methylphenyl)- 1-Propylene, the yield is 80% References: Northwest Normal University;Hu Yulai;Yang Tianyu;Deng Zhoubin;Li Pengfei;Huang Danfeng;Wang Kehu;Su Yingpeng CN111533698, 2020, A Location in patent:Paragraph 0036-0037; 0042-0043 FullText 99-87-6 246 suppliers $16.00/25mL 1195-32-0 97 suppliers $50.00/1 SAMPLE-K References 78-80-8 Synthesis 78-80-8 66 suppliers $45.32/5 G 1195-32-0 97 suppliers $50.00/1 SAMPLE-K References 106-38-7 404 suppliers $14.00/5g 67-64-1 6 suppliers $17.30/10ml 1195-32-0 97 suppliers $50.00/1 SAMPLE-K References 99-87-6 246 suppliers $16.00/25mL 1195-32-0 97 suppliers $50.00/1 SAMPLE-K 13816-33-6 72 suppliers $21.21/1gm: References ALPHA,P-DIMETHYLSTYRENE Related Search: 2-ISOPROPENYLTOLUENE 2,5-DIMETHYLCINNAMIC ACID HomePage | About Us | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase | Product Catalog | Links | Privacy | Terms | Product Manufacturers | New Products Copyright ? 2016 ChemicalBook All rights reserved.
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1779-49-3 613 suppliers $5.00/10g
122-00-9 697 suppliers $5.00/25g
1195-32-0 97 suppliers $50.00/1 SAMPLE-K
Yield:1195-32-0 80%
Reaction Conditions:
Stage #1:Methyltriphenylphosphonium bromide with sodium hydride in tetrahydrofuran at 70; for 0.8 h;Stage #2:para-methylacetophenone in tetrahydrofuran at 75; for 10 h;Cooling with ice;Temperature;
Steps:
3.1; 4.1 (1) Synthesis of 2-(4-methylphenyl)-1-propene:Add sodium hydride (1.2 g, 0.03 mol) and methyltriphenylphosphonium bromide (8.6 g, 0.036 mol) to 70 mL of anhydrous tetrahydrofuran, stir at 70°C for 0.8 hours; then add under ice-water bath conditions 20 mL of a 1.5 mol/L p-methylacetophenone solution in tetrahydrofuran, heated to 75°C for 10 hours to obtain a reaction mixture; add dilute hydrochloric acid to the reaction mixture to quench the reaction, and adjust the pH with dilute hydrochloric acid To neutrality, and finally extract three times with petroleum ether to obtain organic phase A, the organic phase A is dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and column chromatography with petroleum ether to obtain 2-(4-methylphenyl)- 1-Propylene, the yield is 80%
References:
Northwest Normal University;Hu Yulai;Yang Tianyu;Deng Zhoubin;Li Pengfei;Huang Danfeng;Wang Kehu;Su Yingpeng CN111533698, 2020, A Location in patent:Paragraph 0036-0037; 0042-0043
FullText
99-87-6 246 suppliers $16.00/25mL
78-80-8 66 suppliers $45.32/5 G
106-38-7 404 suppliers $14.00/5g
67-64-1 6 suppliers $17.30/10ml
13816-33-6 72 suppliers $21.21/1gm: