cas 2162-31-4, 2-(TETRAHYDRO-2H-PYRAN-2-YLOXY)ETHANOL | Articles data ｜lookchem

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2162-31-4

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Selective monotetrahydropyranylation of symmetrical diols catalyzed by ion-exchange resins
Primary and secondary symmetrical diols with 2-10 carbon atoms gave selectively monotetrahydropyranyl ethers in the reaction catalyzed by wet sulfonic acid-type ion-exchange resins in 3,4-dihydro-2H-pyran (DHP)/toluene or DHP/hexane. The yields of the monoethers were higher than 80% while those of the corresponding diethers were lower than 5%. In these reactions the rate of the formation of the diethers did not increase much even after most of the diols had been consumed. In the reaction of 1,10-decanediol in DHP/hexane, the yields of the monoether were increased by the addition of DMF or DMSO. Each diol was found to have a particular DHP/hydrocarbon ratio that gave the highest selectivity for the monoether. Generally, the larger the number of carbon atoms of the diols, the smaller the ratio of DHP in the solvents to give high selectivity for the monoether. This method of the selective etherification is quite simple and practical.
Nishiguchi, Takeshi,Fujisaki, Shizuo,Kuroda, Masahumi,Kajisaki, Kohtaro,Saitoh, Masahiko
p. 8183 - 8187
(2007/10/03)

Rational Design of Benzyl-Type Protecting Groups Allows Sequential Deprotection of Hydroxyl Groups by Catalytic Hydrogenolysis
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Gaunt, Matthew J.,Yu, Jinquan,Spencer, Jonathan B.
p. 4172 - 4173
(2007/10/03)

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Chemical Properties

Melting Point: 95 °C 22 mm Hg(lit.)
Boiling Point: 255.3 °C at 760 mmHg
Flash Point:108.2 °C
Density: 1.07 g/cm³
Solubility:Chloroform (Slightly), Ethyl Acetate (Slightly)
Storage Temp.:2-8°C
Vapor Pressure: 0.00249mmHg at 25°C
Refractive Index: n20/D 1.457
PKA: 14.28±0.10(Predicted)
BRN: 1280440
PSA: 38.69000
LogP: 0.52190

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