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2-Methyltetrahydrofuran (2-MeTHF) is an organic compound with the molecular formula C 5 H 10 O. It is a highly flammable, mobile liquid. It is mainly used as a replacement for Tetrahydrofuran (THF) in specialized applications for its better performance, such as to obtain higher reaction temperatures, or easier separations (as, unlike THF, it is not miscible with water).
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) ... [2] Acetone: 0.78 56.2 1.67 –94.8 K b [3] ... Tetrahydrofuran: 66.0 [26] Dimethylformamide: 153.0 [27]
Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH 2) 4 O. The compound is classified as heterocyclic compound , specifically a cyclic ether . It is a colorless, water- miscible organic liquid with low viscosity .
2,2,5,5-tetramethyltetrahydrofuran (TMTHF) or 2,2,5,5-tetramethyloxolane (TMO) is a heterocyclic compound with the formula C 8 H 16 O, or (CH 3) 2 (C(CH 2) 2 OC)(CH 3) 2.It can be seen as derivative of tetrahydrofuran (oxolane) with four methyl groups replacing four hydrogen atoms on each of the carbon atoms in the ring that are adjacent to the oxygen.
CH 3 N(C 2 H 4 OH) 2: methyl diethanolamine: 105-59-9 CH 3 NC: methyl isocyanide: 593-75-9 C 5 H 9 NO: N-Methyl-2-pyrrolidone: 872-50-4 CH 3 CH 2 CH 2 OH: 1-Propanol: 71-23-8 CH 2 (CH 2 OH) 2: 1,3-Propanediol: 504-63-2 HOCH 2 CH 2 CH 2 CH 2 CH 2 OH: 1,5-Pentanediol: 111-29-5 (CH 3) 2 CHOH: 2-Propanol: 67-63-0 CH 3 CH 2 COOH: propanoic acid: 79 ...
Thus the alcohol is treated with 2-hydroxytetrahydropyranyl, triphenylphosphine, and diethyl azodicarboxylate (DEAD) in tetrahydrofuran (THF). Commonly, THP ethers are deprotected using acetic acid in a THF/water solution, p -toluenesulfonic acid in water, or Pyridinium p -toluenesulfonate (PPTS) in ethanol .
Tetrahydrothiophene is an organosulfur compound with the formula (CH 2) 4 S. The molecule consists of a five-membered saturated ring with four methylene groups and a sulfur atom. It is the saturated analog of thiophene and is therefore the sulfur analog of THF. It is a volatile, colorless liquid with an intensely unpleasant odor.