Tag: M.W:100-200

Adding a certain compound to certain chemical reactions, such as: 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid, belongs to Triazoles compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 16681-70-2, Recommanded Product: 1H-[1,2,3]Triazole-4-carboxylic acid

Step 2: Tert-butyl 4-(2-(N-methyl-1H-1,2,3-triazole-4-carboxamido)ethyl)piperidine-1-carboxylate To 1H-1,2,3-triazole-4-carboxylic acid (150 mg, 1.327 mmol) and tert-butyl 4-(2-(methylamino)ethyl)piperidine-1-carboxylate (step 1) (322 mg, 1.327 mmol) in DMF (6 ml) was added DIPEA (0.695 ml, 3.98 mmol) and 50% T3P in DMF (1.549 ml, 2.65 mmol). The resulting orange solution was stirred for 4 hrs. The mixture was diluted with EtOAc (200 ml) and washed with 1M HCl (2*50 ml). The organics were dried (MgSO4) and concentrated under reduced pressure. The crude residue in was dissolved in DCM and applied to a 12 g silica cartridge eluting with 0-100% EtOAc/iso-hexane. The product fractions were concentrated to give tert-butyl 4-(2-(N-methyl-1H-1,2,3-triazole-4-carboxamido)ethyl)piperidine-1-carboxylate as a gum. LCMS: Rt=1.01 mins; MS m/z 338.5 [M+H]+; Method 2minLowpHv01

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, 1H-[1,2,3]Triazole-4-carboxylic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Novartis AG; Legrand, Darren Mark; Furminger, Vikki; Thomson, Christopher; Hughes, Owen Rhys; Stanley, Emily; US2014/171403; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 626248-56-4, name is 3-(2H-1,2,3-Triazol-2-yl)aniline, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 626248-56-4

Reactor A was charged with solid ethyl 4-chloro-2-methylthio-5-pyrimidine carboxylate (1.00kg). Reactor A was then charged with absolute ethanol (5.OOL, 4.0kg). Reactor A was then charged with triethylamine (0.62L, 0.45kg). The content of Reactor A was then cooled to about 20 C. Reactor A was then charged 3-amino-N-phenyl-triazole (0.70kg). The reaction mixture was slowly heated to 30-40 C over about 1 hour to give an off white suspension. The contents of Reactor A was stirred between 30-40 C for about 6 hours. 8) Sample solution for ion pair chromatography for less than 1% (area) by HPLC of ethyl 4-chloro-2-methylthio-5-pyrimidine carboxylate. If the sample result complies with criterion proceed to the next step, otherwise agitate for an additional 2 hours between 30-40C and sample again. The reaction mixture generally turns into almost unmixable slurry toward the end of the reaction. The contents of Reactor A was cooled to about 20 C. Tap water (8.OOL, 8.00kg) was charged into Reactor B and the temperature of the contents of Reactor B was adjusted to about 15 C. The contents of Reactor B was charged into Reactor A, while maintaining the temperature at about 15C in Reactor A. The contents of Reactor A was stirred for about 30 minutes at about 15C. The contents of Reactor A was filtered using a filter cloth of about 8im or smaller to accommodate the particle size, or an oyster-style filter with a 3 – 5 im polypropylene filter cloth. Reactor B was charged with tap water (10.OOL, 10.00kg) and half the contents of Reactor B was charged to the filter to wash the solids. The remaining contents of Reactor B was charged to the filter to wash the solids. Reactor B was charged with methyl tert-butyl ether (3.OOL, 2.22kg). The contents of Reactor B was then charged to the filter to wash the solids. The contents of the filter was dried under vacuum such as in a vacuum tray dryer at about 55 C for about 12 hours, until the water (by Karl Fischer) is < 1 % w/w.The title compound was prepared according to Process Example 1 starting with 25.0 kg of ethyl 4-chloro-2-methylthio-5-pyrimidine, 11.25 kg triethylamine, 100 kg absolute ethanol and 17.5 kg 3-amino-N-phenyl-triazole. A 90.4% yield of the title compound was obtained. According to the analysis of related databases, 626248-56-4, the application of this compound in the production field has become more and more popular. Reference:
Patent; PORTOLA PHARMACEUTICALS, INC.; PANDEY, Anjali; WO2014/152768; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 58910-25-1, 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. 58910-25-1, name is 4-Ethyl-3-methyl-1H-1,2,4-triazol-5(4H)-one belongs to Triazoles compound, it is a common compound, a new synthetic route is introduced below.

After dissolving 4-ethyl-5-methyl-2,4-dihydro[1,2,4]triazol-3-one (CAS 58910-25-1) (2.00 g) in N,N-dimethylformamide (5 ml), sodium iodide (235 mg), sodium hydride (60% in oil) (238 mg) and (S)-(+)-epichlorhydrin (2.48 ml) were added and the mixture was stirred at room temperature for one day. Water was added to the reaction mixture, and extraction was performed with dichloromethane and ethyl acetate. The organic layer was washed with brine and dried over anhydrous magnesium sulfate. After filtration, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography to obtain the title compound (540 mg).1H-NMR (400 MHz, CDCl3); delta 1.29 (t, J=7.2 Hz, 3H), 2.24 (s, 3H), 2.67 (dd, J=4.8, 2.8 Hz, 1H), 2.84 (t, J=4.8 Hz, 1H), 3.22-3.27 (m, 1H), 3.68 (q, J=7.2 Hz, 2H), 3.86 (dd, J=14.8, 5.6 Hz, 1H), 3.96 (dd, J=14.8, 4.4 Hz, 1H).

The synthetic route of 4-Ethyl-3-methyl-1H-1,2,4-triazol-5(4H)-one has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Eisai R&D Management Co., Ltd.; US2009/270369; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 27996-86-7, These common heterocyclic compound, 27996-86-7, name is 4-[1,2,4]Triazol-1-yl-benzaldehyde, 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 mixture of azolyl ketone (1a/1b) (1 mmol) and aryloxy benzaldehyde (2a-f) (1 mmol) were dissolved in 10% NaOH-EtOH (5 mL), it was stirred at room temperature for 9-10 h. After completion, 5 mL water was added to the reaction mixture. The separated solid compound was filtered and washed with water. It was purified by crystallization with methanol/chloroform or basic alumina column chromatography to give the desired compounds (3-13).The compounds (16-31) were prepared by the reaction of their corresponding aldehyde and ketone partners.

The synthetic route of 27996-86-7 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Marrapu, Vijay K.; Chaturvedi, Vinita; Singh, Shubhra; Singh, Shyam; Sinha, Sudhir; Bhandari, Kalpana; European Journal of Medicinal Chemistry; vol. 46; 9; (2011); p. 4302 – 4310;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 81606-79-3, name is 2-(1,2,4-Triazol-1-yl)acetonitrile, belongs to Triazoles compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 81606-79-3, Computed Properties of C4H4N4

STR210 108 g (1 mole) of 1,2,4-triazol-1-yl-acetonitrile and 160 g (1.35 moles) of N,N-dimethylformamide dimethyl acetal are heated under reflux for 4 hours; the methanol formed is distilled off until the internal temperature has risen to 120 C.; the resulting residue is dissolved in 400 ml of ethanol, and 400 ml of a 20% strength ethanolic hydrogen chloride solution are added. The crystalline precipitate is filtered off with suction, rinsed with a little ethanol and dried on clay. 163 g (82% of theory) of 3-dimethylamino-2-(1,2,4-triazol-1-yl)-acrylonitrile hydrochloride of melting point 200-204 C. are obtained.

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, 2-(1,2,4-Triazol-1-yl)acetonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Bayer Aktiengesellschaft; US4614534; (1986); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 16681-70-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 16681-70-2 name is 1H-[1,2,3]Triazole-4-carboxylic acid, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

1,2,3-Triazole-4-carboxylic acid (130 mg, 1.2 mmol, 1.2 eq.) and HATU (400 mg, 1.1 mmol, 1.1 eq.) were dissolved in DIPEA (167 muL) and the resulting mixture was stirred for 5 minutes at room temperature in DMF (0.2 mL). DIPEA (3 eq.) and Compound 5 (300 mg, 957 mumol, 1.0 eq.) dissolved in DMF (0.2 mL) was added, and the resulting mixture was stirred for 15 minutes. The reaction was quenched with AcOH and the product was purified by preparative HPLC then lyophilized to yield Compound 6 as a TFA salt (120 mg, 95% purity). MS m/z [M+H]+ calc’d for C22H24N4O4, 409.18. found 409.4

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1H-[1,2,3]Triazole-4-carboxylic acid, and friends who are interested can also refer to it.

Reference:
Patent; RAPTA, Miroslav; US2013/209505; (2013); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 64922-04-9, name is Ethyl 1H-1,2,4-triazole-5-carboxylate, A new synthetic method of this compound is introduced below., Recommanded Product: Ethyl 1H-1,2,4-triazole-5-carboxylate

A solution of 613 mg (14.0 mmol) of sodium hydride in 10 ml of 1-methyl-2-pyrrolidinone is cooled to 0 – 5C and treated dropwise with a solution of 1.74 g (12.4 mmol) of 1H-[1,2,4]triazole-3-carboxylic acid ethyl ester in 10 ml of 1-methyl-2-pyrrolidinone over 8 minutes. The mixture is stirred for 1 hour at 0 – 5C and a solution of 3.00 g (11.2 mmol) of 5-fluoro-2-nitro-4-trifluoromethyl-benzoic acid methyl ester in 10 ml of 1-methyl-2-pyrrolidinone is added. The mixture is allowed to warm slowly to room temperature and stirred for 18 hours under N2. It is poured into water and extracted with ethyl acetate. The organic phase is separated and dried over NaaSO^ filtered and concentrated in vacuo. The residue is purified by flash chromatography (SiO2, hexane / ethyl acetate 1:1) and the mixed fractions are recrystallized in toluene to provide overall 3.12 g (71 %) of 1-(5-methoxycarbonyl-4-nitro-2-trifluoromethyl-phenyl)-1H-[1,2,4]triazole-3-carboxylic acid ethyl ester, m.p. 190 – 192C.

The synthetic route of 64922-04-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; NOVARTIS AG; NOVARTIS PHARMA GMBH; WO2006/10591; (2006); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Some common heterocyclic compound, 3641-13-2, name is 5-Amino-4H-1,2,4-triazole-3-carboxylic acid, molecular formula is C3H4N4O2, 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. Recommanded Product: 5-Amino-4H-1,2,4-triazole-3-carboxylic acid

General procedure: A mixture of benzil (0.01 mol), aldehydes (0.01 mol), 3-amino-1,2,4-triazole-5-carboxylic acid (0.01 mol), ammonium acetate (0.01 mol) and ceric ammonium nitrate (15 mol%) as a catalyst were refluxed in ethanol (15 mL) for about 3-4 h. The progress of the reaction was monitored by TLC. After completion of reaction, the mixture was cooled to room temperature. The solid formed was filtered and dried. The crude products were recrystallized by ethanol.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3641-13-2, its application will become more common.

Reference:
Article; Nikalje, Anna Pratima G.; Ghodke, Mangesh S.; Kalam Khan, Firoz A.; Sangshetti, Jaiprakash N.; Chinese Chemical Letters; vol. 26; 1; (2015); p. 108 – 112;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 3641-08-5, 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. 3641-08-5, name is 2H-1,2,4-Triazole-3-carboxamide belongs to Triazoles compound, it is a common compound, a new synthetic route is introduced below.

In a 500 ml jacketed flask equipped with a mechanical stirrer, a temp probe, a circulation bath and a positive nitrogen atmosphere set up was placed with 1,2,4-triazole-3-carboxamide 25.3 gm (0.112 mole), 1,4-dioxane 225 gm, and pyridine 72.8 gm (0.92 mole). The mixture was chilled to -6.8 C. Trifluoroacetic anhydride 107.1 gm (0.51 mole) was added dropwise at -1.3 to -6.8 C. in 10 min. Then the mixture was warmed to ambient temperature and stirred for 30 min. Without work up, a sample was taken for HPLC analysis. The chromatogram showed that the product contained 93% 3-CNT and 0.2% 3-CAT.

The synthetic route of 2H-1,2,4-Triazole-3-carboxamide has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Ampac Fine Chemicals LLC; US2009/292122; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 135242-93-2, name is (1-Methyl-1H-[1,2,4]triazol-3-yl)methanol, belongs to Triazoles compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 135242-93-2, Product Details of 135242-93-2

A mixture of carbonyldiimidazole (CDI, 4.62 g, 28.5 mmol), ( 1 -methyl- 1,2, 4-triazol- 3-yl)methanol (3.45g, 30.53 mmol), and 2-MeTHF (50 mL) was stirred at room temperature (20 C) for 3 hours. To the mixture was added methyl (5)-l-amino-7-fluoro-2,3-dihydro-lH- indene-4-carboxylate hydrochloride [lOa.HCl] (5.0 g, 20.35 mmol) followed by N,N- diisopropylethylamine (6.58 g, 50.9 mmol). The contents were heated to 60 C and stirred for 15 hours. The mixture was cooled to 20 C, charged with water (50 mL), and stirred for 30 min. The slurry was filtered, washed with 2-MeTHF (2 x 5 mL) and dried under vacuum to give methyl fV)-7-riuoro- 1 -(((( 1 -methyl- 1 H- 1.2.4-triazol-3-yl)methoy)carbonyl)amino)- 2,3-dihydro-lH-indene-4-carboxylate [11a] as white crystalline solid (5.8g, 81.8% yield). ‘H NMR (400 MHz, DMSO-d6) d 8.41 (s, 1H), 7.87 (dd, J = 8.6, 5.0 Hz, 1H), 7.78 (d, J = 8.7 Hz, 1H), 7.11 (t, J = 8.8 Hz, 1H), 5.28-5.22 (m, 1H), 4.98 (q, J = 10 Hz, 2H), 3.82 (s, 3H), 3.80 (s, 3H), 3.31 (ddd, J = 17.6, 8.8, 5.5 Hz, 1H), 3.06 (ddd, J = 17.6, 8.7, 6.3 Hz, 1H), 2.44- 2.35 (m, 1H), 1.94-1.81 (m, 1H).

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, (1-Methyl-1H-[1,2,4]triazol-3-yl)methanol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ARBUTUS BIOPHARMA CORPORATION; COLE, Andrew G.; KULTGEN, Steven; PAMULAPATI, Ganapati Reddy; SPINK, Jan Michelle; (76 pag.)WO2019/200114; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics