Author: Jessica.F

Electric Literature of 6065-54-9, 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. 6065-54-9, name is Dimethyl 2,2-dimethylmalonate belongs to esters-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

A. 2,2-Dimethyl-3-oxo-3-(pentylamino)propionic acid Following the procedure of Example 1A and B except substituting dimethyl 2,2-dimethylmalonate for dimethyl malonate, the title compound is 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, Dimethyl 2,2-dimethylmalonate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; E. R. Squibb & Sons, Inc.; US4654356; (1987); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

These common heterocyclic compound, 29006-01-7, name is Methyl 4-methoxybutanoate, 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. COA of Formula: C6H12O3

Starting material 209a (9.9 g, 75 mmol) was dissolved in THF (100 mL) and water (25 mL). LiOH (3.4 g, 80.9 mmol), the resulting mixture was stirred at room temperature overnight. 1 N HCl (100 mL) was added and extracted with EtOAc. The organic extracts were combined, washed with brine, dried (MgSO4) to give compound 209b (8.8 g, 93%).

The synthetic route of Methyl 4-methoxybutanoate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Schering Corporation; US2006/264489; (2006); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 1732-08-7, name is Dimethyl pimelate, belongs to esters-buliding-blocks 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 1732-08-7, Application In Synthesis of Dimethyl pimelate

Dimethyl pimelate (3.76 g, 20 mmol) was added dropwise to a suspension of NaH(1.06g, 26.6 mmol, 60% in mineral oil) in dry THF (20 mL). The resulting slurry wasstirred at RT overnight. The reaction was quenched with water (5 mL), extracted withEtOAc (20 mL× 3), washed with brine, dried (Na2SO4), and concentrated undervaccum. The residue was chromatographed with petrolum ether-EtOAc (20:1) to give the desired methyl 2-cyclohexanonecarboxylate as a colorless oil. (2.42 g, 77%).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Article; Qian, Hua; Gu, Guoxian; Zhou, Qinghai; Lu, Jiaxiang; Chung, Lung Wa; Zhang, Xumu; Synlett; vol. 29; 1; (2018); p. 51 – 56;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Some common heterocyclic compound, 850449-93-3, name is Methyl 2-(5-amino-2-methylphenyl)acetate, molecular formula is C10H13NO2, 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: Methyl 2-(5-amino-2-methylphenyl)acetate

6-Chloro-4-phenylamino-pyridine-3-carbaldehyde 18 (21 mg, 0.09 mmol) is mixed with 2-(5-amino-2-methyl-phenyl)acetic acid methyl ester 7 (18 mg, 0.1 mmol) and potassium carbonate (37 mg, 0.27 mmol) in DMF (2 mL). The mixture is heated to 100 0C for 16 h. After cooling to rt and removing solvent in vacuo, the crude product is purified using flash chromatography (hexane : ethyl acetate = 1 : 1). The title compound 3-(5-amino- 2-methyl-phenyl)-7-chloro-l-phenyl-lH-[l,6]naphthyridin-2-one 19 is obtained as a pale solid. 1H NMR (400MHz, CDCl3) delta 8.53 (s, IH), 7.68 (s, IH), 7.53-7.57 (m, 2H), 7.47 -7.51 (dt IH), 7.20-7.23 (m, 2H), 6.96 (d, IH), 6.59 (dd, IH), 6.58 (s, IH), 6.52 (s, IH), 2.05 (s, 3H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 850449-93-3, its application will become more common.

Reference:
Patent; IRM LLC; WO2008/51757; (2008); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Related Products of 1202-25-1, The chemical industry reduces the impact on the environment during synthesis 1202-25-1, name is Methyl 4-dimethylaminobenzoate, I believe this compound will play a more active role in future production and life.

PREPARATION 10i 1-(4-N,N-Dimethylaminophenyl)-1-methylethylamine Following a procedure similar to that described in Preparation 10a, but using methyl 4-N,N-dimethylaminobenzoate as a starting material, in a relative amount similar to that used in that Preparation, the title compound was obtained in a yield of 48%. Nuclear Magnetic Resonance Spectrum (CDCl3), delta ppm: 1.48 (6H, singlet); 1.70 (2H, broad singlet); 2.95 (6H, singlet); 6.65-6.80 (2H, multiplet); 7.30 (2H, doublet, J=9 Hz). Infrared Absorption Spectrum (liquid film), numax cm-1: 2960, 1615, 1525, 815.

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-dimethylaminobenzoate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Sankyo Company, Limited; US5536714; (1996); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Some common heterocyclic compound, 16519-02-1, name is Diethyl 2-fluoro-2-methylmalonate, molecular formula is C8H13FO4, 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. Computed Properties of C8H13FO4

Diethyl 2-fluoro-2- methylmalonate (1 eq.) from the previous step was taken up in an aqueous pH=7.3 phosphate buffer (0.14 M, prepared by dissolving 7.3 g of NaHP04 and 2.1 g of KH2P04 per L of water). Lipase from Candida Rugosa (70 mg per mmol of substrate, 847 U/mg, Sigma Cat L1754) was then added and the resulting heterogeneous mixture was vigorously stirred at RT for 18 h. Depending on scale, occasional addition of 1 N NaOH was necessary to maintain the pH of the reaction mixture at -7.3 to ensure optimal activity. The reaction mixture was then added celite, stirred at RT for 1 h and filtered. The filtrate was extracted with EtOAc, dried over MgS04, and filtered. Concentration of the filtrate in vacuo furnished the desired product as a white, crystalline solid (71% yield, 93% enantiomeric excess).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 16519-02-1, its application will become more common.

Reference:
Patent; MERCK PATENT GMBH; JORAND-LEBRUN, Catherine; LAN, Ruoxi; CHEN, Austin; CLARK, Ryan C.; (125 pag.)WO2017/49069; (2017); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Some common heterocyclic compound, 87661-20-9, name is tert-Butyl cyclopropanecarboxylate, molecular formula is C8H14O2, 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. Quality Control of tert-Butyl cyclopropanecarboxylate

Example 25ATert-Butyl 1-(prop-2-en-1-yl)cyclopropanecarboxylate 9.9 ml (70.32 mmol) of diisopropylamine were initially charged in 35 ml of THF, 28.1 ml (70.32 mmol) of a 2.5 M solution of n-butyllithium in n-hexane were added at -40 C. and the mixture was stirred for 30 min. The reaction mixture was then cooled to -78 C., and a solution of 10 g (70.32 mmol) of tert-butyl cyclopropanecarboxylate in 5 ml of THF was added dropwise. The mixture was stirred at -78 C. for 4 h, and a solution of 5.8 ml (66.81 mmol) of allyl bromide in 5 ml of THF was then added dropwise. The reaction mixture was slowly warmed to RT overnight, and aqueous ammonium chloride solution was then added carefully. The mixture was extracted three times with methyl tert-butyl ether. The combined organic phases were dried over sodium sulfate and concentrated under reduced pressure. This gave 10.7 g (83.5% of theory) of the target compound.GC-MS (Method 1): Rt=2.5 min; m/z=126 (M-C4H8)+.1H-NMR (400 MHz, DMSO-d6): delta=5.82 (m, 1H), 4.98 (d, 2H), 2.21 (d, 2H), 1.37 (s, 9H), 0.99 (q, 2H), 0.69 (q, 2H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 87661-20-9, its application will become more common.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; US2012/28971; (2012); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

These common heterocyclic compound, 141772-31-8, name is Methyl 5-amino-2-chloro-4-fluorobenzoate, 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. COA of Formula: C8H7ClFNO2

2. Preparation of Compound No. 18 A solution of 2-fluoro-4-chloro-5-methoxycarbonylaniline (1.0 g, 5 mmol) in THF (10 mL) was added dropwist to a solution of diphosgene (2.0 g, 10 mmol) in toluene (20 mL) with stirring at room temperature. The reaction mixture was stirred at room temperature for one hour and then heated to reflux for 4 hours. The mixture was then cooled to room temperature and the solvents were evaporated under reduced pressure to give 1.1 g of 2-fluoro-4-chloro-5-methoxycarbonylphenyl isocyanate as a solid.

The synthetic route of Methyl 5-amino-2-chloro-4-fluorobenzoate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Dow AgroSciences LLC; US6444615; (2002); B1;,
Ester – Wikipedia,
Ester – 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. 18014-00-1, name is Dimethyl 2,5-dibromoterephthalate, A new synthetic method of this compound is introduced below., HPLC of Formula: C10H8Br2O4

[Example 11] [Show Image] A mixed liquid of methyl p-dibromoterephthalate (Compound 1)(10.6 g, 30.0 mmol) synthesized according to the method of a literature (Macromolecules, 1999, 32, 2455), Compound 15 (made by Sigma-Aldrich Corp.)(24.8 g, 66.0 mmol), PdCl2(dppf)·CH2Cl2 (2.45 g, 3.00 mmol), potassium carbonate (13.7 g, 13.7 mmol), water (60 mL) and THF (1.2 L) was refluxed under a nitrogen atmosphere for 16 hours. After the reaction mixed liquid was allowed to cool to room temperature, water was added to the reaction mixed liquid, and the reaction mixed liquid was subjected to extraction with chloroform. The obtained organic layer was dried with sodium sulfate, and filtered, and thereafter, the solvent was distilled out under reduced pressure. The obtained mixture was separated and refined by a silica gel column chromatography to obtain Compound 16 (7.89 g, 15.0 mmol) in a yield of 50%. The physical properties of Compound 16 were as follows. 1H-NMR (CDCl3, delta ppm): 7.81 (s, 2H), 7.06 (d, 2H), 6.97-7.04 (m, 4H), 6.70 (d, 2H), 3.64 (s, 6H), 2.80 (t, 4H), 1.56-1.63 (m, 4H), 1.32-1.41 (m, 12H), 0.90 (t, 6H)

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Sumitomo Chemical Company, Limited; EP2248818; (2010); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 39552-81-3, 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. 39552-81-3, name is Methyl 2-(4-aminophenyl)acetate belongs to esters-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

EXAMPLE 100 9-Bromo-5-(p-methoxycarbonylmethylphenylcarbamoylmethyl)-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione A procedure similar to that described in Example 52 was carried out with 9-bromo-5-carboxymethyl-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione (340 mg, 1 mmol) and p-methoxycarbonylmethylaniline (215 mg, 1.3 mmol) to give 395 mg of the title compound (81%): mp 262 C. (dec); 1 H NMR (270 MHz, DMSO-d6) delta10.02 (s, 1H), 7.50 (d, 2H, J=8.3 Hz), 7.23 (bs, 1H), 7.18 (d, 2H, J=8.3 Hz), 7.17 (bs, 1H), 5.17~5.26 (m, 1H), 3.61~3.62 (m, 5H), 3.06 (ddd, 1H, J=17.1, 13.5, 4.5 Hz), 2.84 (dm, 1H, J=17.1 Hz),2.56~2.66 (m, 2H), 2.11 (dm, 1H, J=13.5 Hz), 1.76~1.94 (m, 1H).

The synthetic route of Methyl 2-(4-aminophenyl)acetate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Sumitomo Pharmaceuticals Company, Limited; US5616586; (1997); A;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics