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 Leaf alcohol

Leaf alcohol synthesis

13synthesis methods
By the reaction of butyne-1 with ethylene oxide and subsequent selective reduction to the eis isomer (Bedoukian, 1967).
55230-25-6 Synthesis
5,6-Dihydro-2-methyl-2H-pyran

55230-25-6
10 suppliers
inquiry

-

Yield:928-96-1 97.5%

Reaction Conditions:

with 5% ruthenium on carbon;hydrogen in toluene at 100; under 15001.5 Torr; for 4 h;Autoclave;Reagent/catalyst;Temperature;Pressure;

Steps:

5-27

In a 500ml autoclave, add 100g of pretreated methylpyran, 3.0g of 5% Ru/C catalyst, 100g of toluene, the reaction temperature is 100°C, the hydrogen pressure is 2MPa, and the reaction time is 4h. After testing, the conversion rate of methylpyran was 98.64%, and the selectivity of leaf alcohol was 99.32%. The gas phase detection result is as shown in Figure 1, wherein, the retention time 6.349min is the raw material methyl pyran, the area ratio is 1.35724%, the peak retention time between 6.5 and 7.0 is the solvent toluene, and the retention time The peak of 8.591min is The product leaf alcohol accounts for 97.9677% of the area.The reaction solution was transferred to a desolvation bottle, and desolvated under the vacuum of a circulating water vacuum pump, and 95.8 g of solvent toluene was recovered. After the precipitation is completed, vacuum distillation is carried out under the vacuum of the oil pump, and the fractions are collected to obtain 100.11 g of the finished leaf alcohol, with a content of 99.4% and a yield of 97.5%.

References:

CN115073264,2022,A Location in patent:Paragraph 0035-0096

Leaf alcohol Related Search: