Tag: 200-300

The author of 《Construction of esters through sulfuryl fluoride (SO2F2) mediated dehydrative coupling of carboxylic acids with alcohols at》 were Wang, Shi-Meng; Alharbi, Njud S.; Qin, Hua-Li. And the article was published in Synthesis in 2019. Safety of 4-Bromobenzoic acid The author mentioned the following in the article:

A facile method for the construction of esters R1C(O)OR2 [R1 = Et, Ph, 2-furyl, etc.; R2 = Et, cyclohexyl, Bn, etc.] through dehydrative coupling of carboxylic acids with alcs. was developed. The reactions were mediated by sulfuryl fluoride (SO2F2) at room temperature and proceeded with high efficiency. The method had several advantages including broad substrate scope, mild conditions, excellent functional group compatibility and afforded high yields, even on gram scale. In the experimental materials used by the author, we found 4-Bromobenzoic acid(cas: 586-76-5Safety of 4-Bromobenzoic acid)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.Safety of 4-Bromobenzoic acid It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2017,Lu, Zhiyong; Xing, Yue; Du, Liting; He, Haiyan; Zhang, Jianfeng; Hang, Cheng published 《Isostructural functionalization by -OH and -NH2: different contributions to CO2 adsorption》.RSC Advances published the findings.Formula: C6H5Br2N The information in the text is summarized as follows:

Two isostructural mfj-type metal-organic frameworks, [Cu2(ABDPB)(H2O)]n (HHU-3, HHU for Hohai University; H4ABDPB for 5-amino-1,3-bis(3,5-dicarboxylphenyl)-benzene) and [Cu2(OBDPB)(H2O)]n (HHU-4; H4OBDPB for 5-hydroxyl-1,3-bis(3,5-dicarboxylphenyl)-benzene) were successfully synthesized by V-shaped tetracarboxylic ligand with amino and hydroxyl groups, resp. Compared with the prototypical MOF, PCN-306, both MOFs exhibit obviouse decreases in BET surface area and pore volume, with the values of 2354 m2 g-1 and 0.920 cm3 g-1 for HHU-3, and 2353 m2 g-1 and 0.954 cm3 g-1 for HHU-4. Although both functional groups are believed to be effective in strengthen CO2 interactions with the framework, in this type of MOF, amino group works better due to its basic nature. Meanwhile, the decoration of amino groups grafted HHU-3 high CO2 adsorption capacity (25.6 wt% at 1 bar and 273 K) and high CO2 selectivity (SCO2/N2 = 129).3,5-Dibromoaniline(cas: 626-40-4Formula: C6H5Br2N) was used in this study.

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Formula: C6H5Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Asymmetric Reductive Dicarbofunctionalization of Alkenes via Nickel Catalysis》 was written by Anthony, David; Diao, Tianning. Product Details of 2635-13-4This research focused ontriarylethane preparation enantioselective; alkene aryl bromide asym reductive dicarbofunctionalization nickel catalyst; alkene difunctionalization; asymmetric catalysis; nickel catalysis; reductive coupling; triarylethanes. The article conveys some information:

A summary of the efforts to control enantioselectivity for alkene RCH=CH2 [R = Ph, 4-(acetyloxy)benzen-1-yl, 1-[(4-methylbenzene)sulfonyl]-1H-indol-5-yl, etc.] and 1H-indene diarylation with a nickel catalyst was presented. This reaction is useful for preparing triarylethanes (1S/1R)-RCH(R1)CH2R1 (R1 = Ph, 4-chlorophenyl, 2H-1,3-benzodioxol-5-yl, etc.) and (1R,2R/1S,2S)-I. The selectivity is enhanced by an N-oxyl radical additive. In the experiment, the researchers used 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Product Details of 2635-13-4)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Product Details of 2635-13-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Product Details of 586-76-5In 2019 ,《Tetrabutylammonium Iodide-Promoted Acyloxylation-Peroxidation of Alkenes with Carboxylic Acid and tert-Butyl Hydroperoxide》 was published in Synlett. The article was written by Chen, Rongxiang; Chen, Wei; Shen, Yuntao; Wang, Zhan-Yong; Dai, Wei; Wang, Kai-Kai; Liu, Lantao. The article contains the following contents:

An efficient synthesis of tert-Bu peroxides such as RCO2CHR1CH2OOt-Bu [R = 2-naphthyl, 2-thienyl, 4-tert-BuC6H4, etc.; R1 = CO2Me, CO2Et, CO2t-Bu] through TBAI-promoted acyloxylation-peroxidation of alkenes by using a carboxylic acid and tert-Bu hydroperoxide was developed. Simple and com. available TBHP would act as the source of the peroxygen radical. The synthetic utility of this method was enhanced by simple manipulations, easily available starting materials, and a wide substrate scope. In the experiment, the researchers used 4-Bromobenzoic acid(cas: 586-76-5Product Details of 586-76-5)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography. It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.Product Details of 586-76-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of C6H12Br2In 2020 ,《Structure-Adsorption Behavior-Dispersion Property Relationship of Alkyl Chain Cross-Linked Lignosulfonate with Different Molecular Weights》 was published in ACS Omega. The article was written by Hong, Nanlong; Qiu, Xueqing. The article contains the following contents:

The structure-adsorption behavior-dispersion property relationship plays a key role in designing a dispersant or surfactant, such as a coal-water dispersant and a water-reducing agent. In this work, was classified into three fractions with narrow mol. weight distributions via the ultrafiltration method. The adsorption behavior of these three fractions was tested via a quartz crystal microbalance with dissipation monitoring, which showed that the adsorption amounts of the three fractions were far higher than that of sulfomethylated lignin. Fraction-1, with the lowest mol. weight, exhibited the greatest adsorption amount on a Au surface under salt-free conditions. This result illustrates that the alkyl chain is more effective for dispersants with low mol. weight to improve its adsorption amount Fraction-3, with the highest mol. weight, exhibited the greatest adsorption amount on a Au surface under salt-added conditions. This result further illustrates that both the alkyl chain and salt are pos. factors for improving the adsorption amount of dispersants. More importantly, the dispersion stabilization of the TiO2 slurry was significantly improved using the alkAL-S fractions, especially Fraction-3. Based on these results, the alkyl chain crosslinked of lignosulfonate is a promising approach for the industrial applications of lignin as an applicable dispersant.1,6-Dibromohexane(cas: 629-03-8Electric Literature of C6H12Br2) was used in this study.

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of pyrrolo-tetrathiafulvalene molecular bridge (6PTTF6) to study redox switching behavior of single molecules; synthesis of water-soluble thermoresponsive polylactides.Electric Literature of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

COA of Formula: C7H4BrF3In 2020 ,《Synthesis and Characterization of N,N-Dimethylformamide-Protected Palladium Nanoparticles and Their Use in the Suzuki-Miyaura Cross-Coupling Reaction》 appeared in ACS Omega. The author of the article were Ishida, Junya; Nakatsuji, Masato; Nagata, Tatsuki; Kawasaki, Hideya; Suzuki, Takeyuki; Obora, Yasushi. The article conveys some information:

The synthesis of new N,N-dimethylformamide (DMF)-protected palladium nanoparticles (Pd NPs-OAc) employing Pd(OAc)2 (= Pd(OCOCH3)2) as the NP precursor was reported. Pd NPs-OAc were comprehensively characterized by transmission electron microscopy, FT-IR, NMR and XPS to determine the Pd NP size distribution and the coordination state of DMF. Pd NPs-OAc were compared with Pd NPs-Cl, using PdCl2 as the NP precursor. The Suzuki-Miyaura cross-coupling reaction proceeded efficiently in the presence of Pd NPs-OAc and a high catalytic activity was observed with a turnover number of up to 1.5 x 105. Furthermore, the Pd NP-OAc catalysts could be recycled at least five times. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7COA of Formula: C7H4BrF3)

1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. COA of Formula: C7H4BrF3 Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Nair, Jay B.; Hakes, Linda; Yazar-Klosinski, Berra; Paisner, Kathryn published an article in ACS Omega. The title of the article was 《Fully Validated, Multi-Kilogram cGMP Synthesis of MDMA》.Recommanded Product: 5-Bromobenzo[d][1,3]dioxole The author mentioned the following in the article:

MDMA is increasingly used in clin. research, but no cGMP process has yet been reported. We describe here the first fully validated cGMP synthesis of up to 5 kg (≈30 000 patient doses) of MDMA in a four-step process beginning with a noncontrolled starting material. The overall yield was acceptable (41-53%, over four steps), and the chem. purity of the final product was excellent, exceeding 99.9% of the peak area by HPLC in each of the four validation trials. The availability of cGMP-compliant MDMA will facilitate ongoing clin. trials and provide for future therapeutic use, if encouraging results lead to FDA approval. The results came from multiple reactions, including the reaction of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Recommanded Product: 5-Bromobenzo[d][1,3]dioxole)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Recommanded Product: 5-Bromobenzo[d][1,3]dioxole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Liu, Jianming; Wang, Xiaopei; Wang, Zhiyue; Yang, Yan; Tang, Qinghu; Liu, Hongchi; Huang, Hanmin published an article in iScience. The title of the article was 《Unlocking a self-catalytic cycle in a copper-catalyzed aerobic oxidative coupling/cyclization reaction》.Category: bromides-buliding-blocks The author mentioned the following in the article:

A copper-catalyzed, aerobic oxidative C-H/C-H cyclization reaction, occurs by cleaving the C-H and N-H bonds of 3-phenylindoles, e.g., I. A broad range of 3-phenylindoles I can be well tolerated to produce the indole-containing polycyclic aromatic hydrocarbons (PAH), e.g., II in good to excellent yields. An evaluation of the reaction mechanism is enabled by the isolation of the di-, e.g., III and tri-indole intermediates, e.g., IV highlighting the role of the substrate for this catalytic reaction. The results of these controlled experiments and kinetic studies provide solid exptl. support for a self-catalysis reaction, which has rarely been observed in oxidative C-H activation reactions. Addnl. mechanistic studies indicate that the substrate for this reaction accelerates by the following mechanism: the substrate combines with the Cu catalyst to transform the less active di-indole intermediate into a tri-indole intermediate. This intermediate is quickly converted into the desired product along with regeneration of the substrate copper complex. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Category: bromides-buliding-blocks)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Category: bromides-buliding-blocks1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Water-Soluble Cyclophanes Synthesized via the Zincke Reaction》 was written by Tong, Lu; Zhu, Dingsheng; Chen, Binbin; Chen, Yixin; Wu, Guangcheng; Zeng, Fei; Li, Hao. Recommanded Product: 1,4-Bis(bromomethyl)benzeneThis research focused onWater Soluble cyclophanes synthesized zincke reaction. The article conveys some information:

By taking advantage of the Zincke reaction, we successfully synthesized three macrocycles, each of which contains two bipyridinium units as the electron acceptors. Two of them contain sp2-hybridized atoms exclusively in the ring frameworks, while the third contains two methylene units. The third macrocycle is able to form 1:1 inclusion complexes with guests of complementary sizes. A pair of isomers, namely, phenanthrene and anthracene, could be separated by the third macrocycle. The experimental process involved the reaction of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Recommanded Product: 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool. Recommanded Product: 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Hydrodebromination of Aromatic Bromides Catalyzed by Unsupported Nanoporous Gold: Heterolytic Cleavage of Hydrogen Molecule》 was written by Zhao, Yuhui; Feng, Xiujuan; Zhang, Sheng; Yamamoto, Yoshinori; Bao, Ming. Recommanded Product: 2675-79-8This research focused onunsupported nanoporous gold catalyst preparation surface structure; aromatic bromide gold catalyst debromination; aryl compound preparation. The article conveys some information:

Unsupported nanoporous gold (AuNPore) was a highly efficient, practically applicable, and recyclable catalyst for hydrodebromination of aromatic bromides. The AuNPore-catalyzed hydrodebromination of aromatic bromides proceeded smoothly at relatively low hydrogen pressure and temperature to achieve good to excellent yields of the corresponding non-bromine variants. The selective hydrodebromination reaction occurred exclusively in the coexistence of chlorine atom. For the first time, a mechanistic study revealed that the H-H bond splits in a heterolysis manner on the surface of AuNPore to generate Au-H hydride species. In the experimental materials used by the author, we found 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Recommanded Product: 2675-79-8)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Recommanded Product: 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary