21. It is a colorless Et 3 B . It is soluble in organic solvents tetrahydrofuran and hexane. 22. With tetrahydrofuran , VCl 3 forms the red / pink adduct VCl 3 ( THF ) 3. 23. Liquid ammonia, ether, or hydrocarbon solvents are used, the most common of which being tetrahydrofuran . 24. In many transition metal compounds, the empty coordination site is stabilized by a coordinating solvent like tetrahydrofuran . 25. Acetonitrile is displaced by tetrahydrofuran ( THF ) to give [ MoCl 4 ( thf ) 2 ]. 26. The technology involves the vapor phase hydrogenation of succinic acid into the BDO and tetrahydrofuran ( THF ). 27. Treatment with n-Bu 4 NF in tetrahydrofuran removes the siloxy groups to form the desired diols. 28. Pyrithione is a weak acid with methyl " tert "-butyl ether, and tetrahydrofuran ). 29. Other products were PVC and basic chemicals such as trichlorethylene, formaldehyde, tetrahydrofuran , acetic acid, and acetone. 30. Solvent adjustments between the two steps are common; if one solvent is used, tetrahydrofuran is the solvent of choice.
