Tag: M.W=100-200

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 72635-78-0, name is 3-Amino-4-bromobenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 72635-78-0

To R27 (25.0 g, 111 mmol) in acetonitrile (750 mL) is added MeI (15 mL, 241 mmol) and K2CO3 (60.0 g, 434 mmol) and the reaction mixture is stirred at 60 C. for 2 h. The reaction mixture is filtered and concentrated. Water and ethyl acetate are added to the residue. The organic layer is extracted twice with water, dried over MgSO4 and concentrated. Yield 56%. For I-12.1.1, I-12.1.2, I-12.1.3, I-12.1.5, I-12.1.7 and I-12.1.8 sodium hydride and DMF is used instead of potassium carbonate and ACN. For I-12.1.3, I-12.1.7 and I-12.1.8 the reaction temperature is r.t.

The synthetic route of 72635-78-0 has been constantly updated, and we look forward to future research findings.

Application of 10365-94-3, These common heterocyclic compound, 10365-94-3, name is 1,3,5-Benzenetricarbonitrile, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Example 20:; Production of D-141:; D-141 was produced according to the following scheme:Production of D-141A:; 100 ml of methanol was added to 11.5 g of 1,3,5- tricyanobenzene produced in an ordinary manner, and then 26.0 ml of 50 % hydroxylamine solution was added to it, and stirred at 6O0C for 3 hours. After cooled, water was added to the reaction liquid, and the deposited crystal was taken out through filtration and dried to obtain 8.0 g of a crystal of D-141A.

Statistics shows that 1,3,5-Benzenetricarbonitrile is playing an increasingly important role. we look forward to future research findings about 10365-94-3.

Synthetic Route of 2856-63-5, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 2856-63-5, name is 2-(2-Chlorophenyl)acetonitrile, This compound has unique chemical properties. The synthetic route is as follows.

EXAMPLE 30 Synthesis of 2-cyanomethylbiphenyl An oven dried resealable Schlenk tube was evacuated and backfilled with argon and charged with palladium acetate (2.2 mg, 0.01 mmol, 1.0 mol %), 2-(di-tert-butylphosphino)biphenyl (6.0 mg, 0.020 mmol, 2.0 mol %), phenylboron dihydroxide (183 mg. 1.5 mmol), and potassium fluoride (174 mg, 3.0 mmol). The tube was evacuated and backfilled with argon, and THF (1 mL) and 2-chlorobenzyl cyanide (152 mg, 1.0 mmol) were added through a rubber septum. The tube was sealed with a teflon screwcap, and the reaction mixture was stirred at room temperature until the starting aryl chloride had been completely consumed as judged by GC analysis. The reaction mixture was then diluted with ether (30 mL) and poured into a separatory funnel. The mixture was washed with 1.0 M NaOH (20 mL), and the aqueous layer was extracted with ether (20 mL). The combined organic layers were washed with brine (20 mL), dried over anhydrous magnesium sulfate, filtered, and concentrated. The crude material was purified by flash chromatography on silica gel to afford 178 mg (92%) of the title compound.

The chemical industry reduces the impact on the environment during synthesis 2-(2-Chlorophenyl)acetonitrile. I believe this compound will play a more active role in future production and life.

Application of 72635-78-0, A common heterocyclic compound, 72635-78-0, name is 3-Amino-4-bromobenzonitrile, molecular formula is C7H5BrN2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

To a mixture of 3-amino-4-bromo-benzonitrile (1.98 g, 10 mmol), TEA (5.06 g, 50 mmol), and methylene chloride (50 ml), mesyl chloride (2.71 ml, 35 mmol) was added at 0 C. and the mixture was stirred at room temperature for 30 min. Water was added to the reaction solution, which was then extracted with dichloromethane. The organic layer was dried over sodium sulfate. The drying agent was removed by filtration and the residues obtained after concentration under reduced pressure were added with tetrahydrofuran (100 ml), water (400 mul) and sodium hydride (540 mg, 15.5 mmol), and stirred at room temperature for 16 hr. To the reaction solution, saturated aqueous solution of ammonium chloride (200 ml) was added followed by extraction with ethyl acetate. The organic layer was dried over sodium sulfate. The drying agent was removed by filtration and the residues obtained after concentration under reduced pressure were purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (2.48 g, 90%).1H-NMR (400 MHz, DMSO-d6) delta: 9. 82 (1H, s), 7. 87 (1H, d, J=4 Hz), 7. 75 (1H, d, J=8 Hz), 7. 70 (1H, dd, J=8 Hz, 4 Hz), 3. 14 (3H, s)HPLC retention time: 1.63 min (analysis condition U)

The synthetic route of 72635-78-0 has been constantly updated, and we look forward to future research findings.

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 4354-73-8, name is 2-Cyclohexylidenemalononitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. name: 2-Cyclohexylidenemalononitrile

General procedure: Triethylamine, 1 mL, was added dropwise with stirring to a solution of 1.5 g (10 mmol) of cyclohexylidenemalononitrile and 10 mmol of substituted phenyl isothiocyanatein 2 mL of DMF. The mixture was stirred for 1 hat 50 C, cooled to room temperature, and diluted with 4 mL of methanol. The precipitate was filtered off, washed with water, and recrystallized from nitromethane. 3-Amino-2-phenyl-1-sulfanylidene-1,2,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (1a) [12].Yield 2.252 g (78%), mp 270-271C. 1H NMR spectrum(DMSO-d6), delta, ppm: 1.75-1.81 m (4H, 6-H, 7-H),2.52-2.58 m (2H, 8-H), 2.67-2.73 m (2H, 5-H), 6.21 br.s (2H, NH2), 7.10-7.15 m (2H, Harom), 7.46-7.52 m (1H, Harom), 7.55-7.63 m (2H, Harom). 13C NMRspectrum (DMSO-d6), deltaC, ppm: 21.2, 22.4, 28.3, 28.5,78.6, 115.6, 126.5, 127.9, 128.8, 130.0, 138.7, 144.4,153.2, 181.9. Found, %: C 68.22; H 5.40; N 14.84;S 11.47. C16H15N3S. Calculated, %: C 68.30; H 5.37;N 14.93; S 11.40.

The synthetic route of 4354-73-8 has been constantly updated, and we look forward to future research findings.

Application of 159847-80-0, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 159847-80-0, name is Methyl 4-amino-3-cyanobenzoate belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

4-Amino-3-cyano-benzoic acid methyl ester (3.2 g, 10 mmol) in tetrahydrofurane/ water (110 ml, 1:1) was added lithium hydroxide hydrate (2.3 g, 30 mmol), the reaction mixture was stirred at room temperature for 20 hours and added hydro chloric acid (1 M) to pH = 3. From the mixture was tetrahydrofurane distilled of and the title compound precipitated out of solution.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, Methyl 4-amino-3-cyanobenzoate, other downstream synthetic routes, hurry up and to see.

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 508203-48-3, name is 2,3-Difluoro-4-methylbenzonitrile, A new synthetic method of this compound is introduced below., Product Details of 508203-48-3

To a suspension of 2,3-difluoro-4-methylbenzonitrile (5.0 g, 32.6 mmol) in ethanol (111 mL) at 25C was added hydroxylamine hydrochloride (4.5 g, 65.3 mmol). The reaction mixture was heated at80C for 2 h. After cooling to room temperature the volatiles were removed under reduced pressurethus affording a white solid that was used in the next step without purification.1H NMR (400 MHz, CDCI3) oe ppm: 7.30 (m, 1H), 6.95 (m, 1H), 6.50 (brs, 1H), 5.05 (brs, 2H),2.30 (s, 3H).

The synthetic route of 508203-48-3 has been constantly updated, and we look forward to future research findings.

Application of 56043-01-7, A common heterocyclic compound, 56043-01-7, name is 2-Amino-6-methylbenzonitrile, molecular formula is C8H8N2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

2-amino-6-methylbenzonitrile (132.2 mg, 1.0 mmol) was sequentially added to a 100 mL high pressure sealed tube, benzyl alcohol(129.6mg, 1.2mmol, 1.2equiv.), cesium hydroxide monohydrate (167.9mg, 1.0mmol), add an air ball at the sealing mouthAfter stirring at 120 C for 36 h, the product was completely purified by column chromatography by TLC or GC-MS. The isolated yield was 51%.

The synthetic route of 56043-01-7 has been constantly updated, and we look forward to future research findings.

Electric Literature of 134450-56-9, These common heterocyclic compound, 134450-56-9, name is 4,5-Difluorophthalonitrile, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: A solution of 5a (67 mg, 0.61 mmols) in DMF (10 mL) was treated NaH (60 %, 48mg, 1.2 mmols), allowed to stir for half a minute at room temperature followed by addition of phthalonitrile 6 (100 mg, 0.61 mmols). A deep blue coloration developed in the reaction flask and TLC monitoring in 10 minutes showed complete consumption of both starting materials 5a and 6 and appearance of a new spot more non-polar to both starting materials, which was very strongly UV-active. The reaction was quenched in cold water (100 mL), extracted into ethyl acetate (20 mL), organic layer repeatedly washed with brine solution (5 × 15 mL) and dried over sodium sulfate. Evaporation of the majority of ethyl acetate followed by re-crystallization in an ice-bath yielded 7a (single spot by TLC control, 30% Ethyl acetate/Petroleum ether) as buff-colored crystals. Yield (62 mg, 43%). 1H NMR (300 MHz, d6-DMSO): delta 7.82 (s, 2H), 7.05 (s, 4H); 13C NMR (150 MHz, d6-DMSO): delta 145.57, 140.06, 125.67, 121.99, 116.76, 115.27, 110.81; UV-vis (DMSO) lambdamax (log epsilon) 261 (4.53), 324 (3.48); HRMS (ESI+) calcd. for C14H6N2O2Na 257.0327, observed for C14H6N2O2Na 257.0293. Melting point: 311 C.

Statistics shows that 4,5-Difluorophthalonitrile is playing an increasingly important role. we look forward to future research findings about 134450-56-9.

Application of 868-54-2,Some common heterocyclic compound, 868-54-2, name is 2-Aminoprop-1-ene-1,1,3-tricarbonitrile, molecular formula is C6H4N4, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: Heterocyclic ketene aminals (1 mmol), aryl aldehydes (1.2 mmol), malononitriledimer (1.5 mmol), acetic acid (1 mmol), piperidine (1 mmol) and ethanol (10 mL)were stirred at refluxing for 1 h. After completion of the reaction (confirmed by TLC),the reaction mixture was filtered to afford the crude product, which was furtherwashed with 95% ethanol to give pure product 4.

The synthetic route of 868-54-2 has been constantly updated, and we look forward to future research findings.