Category: 22929-52-8

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.22929-52-8,Dihydrofuran-3(2H)-one,as a common compound, the synthetic route is as follows.

General procedure: Similar to as described in General Procedure Y Step 1, diethyl oxalate was reacted withoxolan-3-one to give 400 mg (5percent) of ethyl 2-oxo-2-(4-oxooxolan-3-yl)acetate as yellow oil..; Step 1: A solution of cycloalkylketone (1.0 eq.) in EtOH (0.5 mL/mmol) was cooled to 0 ¡ãC, then sodium ethoxide (21percent wt solution in EtOH, 1.1 eq.) was added. To this mixture was added diethyl oxylate (1.0 eq.) and the mixture was allowed to warm to room temperature overnight. In vacuo concentration provided the desired product of sufficient purity to be used directly (yield assumed to be quantitative)., 22929-52-8

The synthetic route of 22929-52-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; BLAQUIERE, Nicole; BURCH, Jason; CASTANEDO, Georgette; FENG, Jianwen A.; HU, Baihua; STABEN, Steven; WU, Guosheng; YUEN, Po-wai; WO2015/25025; (2015); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

22929-52-8, Dihydrofuran-3(2H)-one is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(a) 3-Hydroxy-3-vinyltetrahydrofuran Obtained from tetrahydrofuran-3-one (J. Org. Chem., 1989, 54, 1249) and vinylmagnesium bromide, by a procedure similar to that described in Example 5(a), as an oil. Rf 0.45 (SS 7). delta(CDCl3): 1.90 (1H, br s), 1.92-2.20 (2H, m), 3.62-3.78 (2H, m), 3.92-4.10 (2H, m), 5.20 (1H, d), 5.44 (1H, d), 5.95-6.08 (1H, dd). HRMS: m/z 114.068.

22929-52-8, The synthetic route of 22929-52-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pfizer Inc.; US5607960; (1997); A;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.22929-52-8,Dihydrofuran-3(2H)-one,as a common compound, the synthetic route is as follows.

22929-52-8, EXAMPLE 1 7-Oxa-1,3-diazaspiro[4.4]nonane-2,4-dione STR8 A solution of 19.2 g of ammonium carbonate in 42 ml of ethanol and 28 ml of water is added to 10.0 g of 3-ketotetrahydrofuran. The resulting mixture is heated to 55¡ã and to it is then added, dropwise, a solution of 6.3 g of potassium cyanide in 15 ml of water. The reaction mixture is stirred at 55¡ã for 18 hrs. Thereafter the reaction mixture is evaporated in vacuo to dryness to obtain a residue. The residue is dissolved in a minimum of water and the mixture made acidic with 2 N hydrochloric acid. The first crop of the title product precipitates out on cooling and is filtered off. A second crop of the title product is obtained by concentrating the filtrate and cooling. The two combined crops are recrystallized from ethanol to give refined title product, m.p. 202¡ã-204¡ã.

22929-52-8 Dihydrofuran-3(2H)-one 529392, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; Sandoz, Inc.; US4320135; (1982); A;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

22929-52-8, Dihydrofuran-3(2H)-one is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 164 Ethyl 3-[[(trans-4-methylcyclohexyl)carbonyl](tetrahydro-3-furanyl)amino]-1- (phenylmethyl)-1 ate To a solution of Intermediate 163 (3.73 g, 11.8 mmol) in DCM (35 mL) was added trans-4- methylcyclohexanecarbonyl chloride (2.28 g, 14 mmol), followed by triethylamine (2.5 mL). The reaction was heated at 45 ¡ãC for 16 hours under nitrogen, whereupon further aliquots of triethylamine (2 mL) and trans-4-methylcyclohexanecarbonyl chloride (1.5 g) were added. Heating was continued for a further 16 hours. After cooling, the mixture was diluted with DCM, washed with hydrochloric acid solution (1M), then water, and then saturated sodium bicarbonate solution. The organic layer was passed through a hydrophobic frit, evaporated, and purified using 120 g ISCO Flash column, eluting with a gradient of ethyl acetate in cyclohexane (5-100percent) to give the title compound. MS calcd for (C25H33N304+ H) + : 440 MS found (electrospray) : (M+H) += 440

22929-52-8, As the paragraph descriping shows that 22929-52-8 is playing an increasingly important role.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2005/92863; (2005); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem