3-(3,4-DIMETHOXYPHENYL)-2-METHYL-1-PROPENE synthesis
- Product Name:3-(3,4-DIMETHOXYPHENYL)-2-METHYL-1-PROPENE
- CAS Number:155583-45-2
- Molecular formula:C12H16O2
- Molecular Weight:192.25
74-87-3
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1310466-22-8
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155583-45-2
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Yield:155583-45-2 88.5%
Reaction Conditions:
with dmap;sodium hydroxide in water at 90; under 3750.38 Torr; for 4 h;Autoclave;Inert atmosphere;Concentration;Pressure;Temperature;Reagent/catalyst;
Steps:
2.1 (1) Preparation of intermediate 1,2-dimethoxy-4- (2-methylallyl) benzene
In a 1000 mL autoclave, 36.5 g (0.2 mol, 90% content)4- (2-methylallyl) -1,2-dihydroxybenzene,20.2 g (0.5 mol, 99% content) of sodium hydroxide, 0.12 g (0.001 mol, 99%) of 4-dimethylaminopyrazoleAnd 219 g of water were added thereto, and the mixture was replaced with nitrogen three times.ThroughMethylene chloride, Heated to 90 ° C, the pressure in the 0.5MPa reaction under 4h, liquid, organic distillation, boiling range of 110-112 ° C / 5mmHg fractions were 35.8g clear liquid color 1,2-dimethoxy -4- (2-methylallyl) benzene, content 95.0%, yield 88.5%.
References:
CN105418392,2016,A Location in patent:Paragraph 0030; 0031
776-99-8
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1779-49-3
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155583-45-2
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2859-78-1
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563-47-3
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155583-45-2
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