Tag: 100-200

Zhang, Yan; Long, Zhiwu; Le, Yi; Liu, Li; Yan, Longjia published an article in Heterocycles. The title of the article was 《Microwave-assisted synthesis of phenylisoxazole derivatives via 1,3-dipolar cycloaddition》.Electric Literature of C7H13NO2 The author mentioned the following in the article:

In this paper, an efficient method was developed to prepare phenylisoxazoles via metal-free microwave-assisted 1,3-dipolar cycloaddition reaction. Thirty derivatives were synthesized under the optimal condition and identified by NMR and HRMS. The yield was good from 30% to 93%. In addition to this study using Ethyl 3-(dimethylamino)acrylate, there are many other studies that have used Ethyl 3-(dimethylamino)acrylate(cas: 924-99-2Electric Literature of C7H13NO2) was used in this study.

Ethyl 3-(dimethylamino)acrylate(cas: 924-99-2) belongs to anime. In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).Electric Literature of C7H13NO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Dong, Kuiyong; Marichev, Kostiantyn O.; Xu, Xingfang; Doyle, Michael P. published an article in Synlett. The title of the article was 《High Stereocontrol in the Preparation of Silyl-Protected γ-Substituted Enoldiazoacetates》.Reference of Methyl 3-oxovalerate The author mentioned the following in the article:

A robust and efficient synthesis of triisopropylsilyl (TIPS)-protected γ-substituted enoldiazoacetates with excellent Z stereocontrol by using Li bis(trimethylsilyl)azanide (LiHMDS) as a base and TIPSOTf as a silyl transfer reagent is reported. Despite their increased size compared to previously tert-butyldimethylsilyl (TBS)-protected γ-unsubstituted enoldiazoacetates, a high product yield with exceptional stereocontrol was achieved in Cu-catalyzed [3+3] cycloaddition reaction with nitrones by using a chiral indeno bisoxazoline ligand. In the experiment, the researchers used many compounds, for example, Methyl 3-oxovalerate(cas: 30414-53-0Reference of Methyl 3-oxovalerate)

Methyl 3-oxovalerate(cas: 30414-53-0) belongs to ketone compounds. Ketone compounds have important physiological properties. They are found in several sugars and in compounds for medicinal use, including natural and synthetic steroid hormones. Molecules of the anti-inflammatory agent cortisone contain three ketone groups.Reference of Methyl 3-oxovalerate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Recommanded Product: 936-03-8On June 3, 2004, Fache, Fabienne; Piva, Olivier published an article in Synlett. The article was 《Hexafluoroisopropanol: A powerful solvent for the hydrogenation of functionalized aromatic compounds》. The article mentions the following:

Various substituted aromatic compounds have been reduced under H2 using RuCl3. The fluorous solvent hexafluoroisopropanol turned out to be particularly efficient in the case of compounds difficult to reduce in organic solvents. In the experiment, the researchers used many compounds, for example, Cis-methyl 2-hydroxycyclohexanecarboxylate(cas: 936-03-8Recommanded Product: 936-03-8)

Cis-methyl 2-hydroxycyclohexanecarboxylate(cas: 936-03-8) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Recommanded Product: 936-03-8 They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Reference of 3-(Methoxycarbonyl)benzoic acidOn September 27, 2019 ,《Synthesis of Biaryls via Decarbonylative Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling of Carboxylic Acids》 was published in iScience. The article was written by Liu, Chengwei; Ji, Chong-Lei; Qin, Zhi-Xin; Hong, Xin; Szostak, Michal. The article contains the following contents:

The present report implements a decarbonylative version with loss of carbon monoxide (CO) that enables to directly engage acids ArC(O)OH (Ar1 = 2-[(E)-2-phenylethenyl]phenyl, naphthalen-1-yl, pyridin-3-yl, etc.)/Ar1B(OH)2 (Ar1 = thiophen-3-yl, naphthalen-2-yl, 2H-1,3-benzodioxol-5-yl, etc.) in a Suzuki-Miyaura cross-coupling to produce biaryls as a general method with high cross-coupling selectivity using a well-defined Pd(0)/(II) catalytic cycle. This protocol shows a remarkably broad scope (>80 examples) and is performed in the absence of exogenous inorganic bases. In a broader context, the approach shows promise for routine applications in the synthesis of biaryls Ar-Ar1 by carefully controlled decarbonylation of prevalent acids. In addition to this study using 3-(Methoxycarbonyl)benzoic acid, there are many other studies that have used 3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0Reference of 3-(Methoxycarbonyl)benzoic acid) was used in this study.

3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Reference of 3-(Methoxycarbonyl)benzoic acid

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yang, Dan; Wu, Xiong; Zheng, Xiao-Jie; Xie, Jian-Hua; Zhou, Qi-Lin published their research in Organic Letters in 2021. The article was titled 《Dynamic Kinetic Resolution of γ-Substituted Cyclic β-Ketoesters via Asymmetric Hydrogenation: Constructing Chiral Cyclic β-Hydroxyesters with Three Contiguous Stereocenters》.Product Details of 609-08-5 The article contains the following contents:

An efficient asym. hydrogenation of racemic γ-substituted cyclic β-ketoesters I (R = Ph, 2-naphthyl, 2-furyl, etc.; n = 1, 2) via dynamic kinetic resolution to provide chiral cyclic β-hydroxy esters II with three contiguous stereocenters is reported. Using a chiral spiro iridium catalyst (R)-5 (Ir-SpiroSAP), a series of racemic γ-aryl/alkyl substituted cyclic β-ketoesters I was hydrogenated to the corresponding chiral cyclic β-hydroxy esters II in high yields (84-97%) with good to excellent enantioselectivities (69->99% ee) and cis,cis-selectivities (up to >99:1). In the experiment, the researchers used many compounds, for example, Diethyl 2-methylmalonate(cas: 609-08-5Product Details of 609-08-5)

Diethyl 2-methylmalonate(cas: 609-08-5) belongs to aliphatic hydrocarbons. Aliphatic hydrocarbons belong to the most abundant fraction in crude oil. Aliphatics molecules are linear or branched open-chain structures such as n-alkanes, isoalkanes, cycloalkanes (naphthenes), terpenes and steranes.Product Details of 609-08-5

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Hui; Jia, Rui; Hong, Mei; Miao, Hongyan; Ni, Bangqing; Niu, Tengfei published their research in Green Chemistry in 2021. The article was titled 《Hydroxyl radical-mediated oxidative cleavage of C=C bonds and further esterification reaction by heterogeneous semiconductor photocatalysis》.COA of Formula: C8H7FO2 The article contains the following contents:

A hydroxyl radical-mediated aerobic cleavage of alkenes and further sequence esterification reaction for the preparation of carbonyl compounds have been developed by using tubular carbon nitride (TCN) as a general heterogeneous photocatalyst under an oxygen atm. with visible light irradiation This protocol has an excellent substrate scope and gives the desired aldehydes, ketones and esters in moderate to high yields. Importantly, this metal-free procedure employed photogenerated hydroxyl radicals in situ as green oxidation active species, avoiding the present addnl. initiators. The reaction could be carried out under solar light irradiation and was applicable to large-scale reactions. Furthermore, the recyclable TCN catalyst could be used several times without a significant loss of activities.Methyl 4-fluorobenzoate(cas: 403-33-8COA of Formula: C8H7FO2) was used in this study.

Methyl 4-fluorobenzoate(cas: 403-33-8) is an organic fluorinated building block used for the synthesis of various pharmaceutical compounds. It can be used for the preparation of Blonanserin.COA of Formula: C8H7FO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Highly Chemo- and Enantioselective Hydrogenation of 2-Substituted-4-oxo-2-alkenoic Acids》 was written by Liu, Xian; Wen, Jialin; Yao, Lin; Nie, Huifang; Jiang, Ru; Chen, Weiping; Zhang, Xumu. Computed Properties of C8H7FO2 And the article was included in Organic Letters in 2020. The article conveys some information:

The highly chemo- and enantioselective hydrogenation of (E)-2-substituted-4-oxo-2-alkenoic acids was established for the first time using the Rh/JosiPhos complex, affording a series of chiral α-substituted-γ-keto acids with excellent results (up to 99% yield and >99% ee) and high efficiency (up to 3000 TON). In addition, the importance of this methodol. was further demonstrated by a concise and gram-scale synthesis of the anti-inflammatory drug (R)-flobufen. In the experiment, the researchers used many compounds, for example, Methyl 4-fluorobenzoate(cas: 403-33-8Computed Properties of C8H7FO2)

Methyl 4-fluorobenzoate(cas: 403-33-8) can be used in the synthesis of trisubstituted imidazole derivatives containing a 4-fluorophenyl group, a pyrimidine ring, and a CN- or CONH2-substituted benzyl moiety.Computed Properties of C8H7FO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Copper-catalyzed sp3-carbon radical/carbamoyl radical cross coupling: A direct strategy for carbamoylation of 1,3-dicarbonyl compounds》 was published in Tetrahedron in 2020. These research results belong to Yan, Xu-Ping; Li, Cheng-Kun; Zhou, Shao-Fang; Shoberu, Adedamola; Zou, Jian-Ping. Product Details of 4949-44-4 The article mentions the following:

A novel copper-catalyzed sp3-carbon radical/carbamoyl radical cross-coupling protocol for the construction of C(sp3)-C(O) bond was described. This provided a straightforward method for synthesis of 2-carbamoyl-1,3-dicarbonyl compounds R1C(O)CH(C(O)R)C(O)R2 [R = NMe2, NEt2, N(i-Pr)2, N(n-Bu)2, morpholino; R1 = Me, Ph, 2-MeC6H4, etc.; R2 = Me, OEt, Ph, etc.] in good to excellent yields under mild conditions. Mechanistic studies confirmed the generation of both carbamoyl and C(sp3)-centered radicals directly from oxidation of C(sp3)-H bond of formamides and 1,3-dicarbonyl compounds, resp. In the part of experimental materials, we found many familiar compounds, such as Ethyl 3-oxopentanoate(cas: 4949-44-4Product Details of 4949-44-4)

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. Ketones are highly reactive, although less so than aldehydes, to which they are closely related. Much of their chemical activity results from the nature of the carbonyl group. Ketones readily undergo a wide variety of chemical reactions.Product Details of 4949-44-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Bronsted acid catalyzed proto-functionalization of enecarbamates and enamides: A convenient route to N,O-acetals》 was published in Tetrahedron in 2020. These research results belong to Ma, Xiao-Yan; Zhang, Chang-Fei; Hu, Xinjun; Wei, Zou; Li, Yanli. Electric Literature of C5H11NO2 The article mentions the following:

N,O-acetals are important structures found in many bioactive natural products, and this unique organic functional group can serve as a useful synthetic precursor to the unstable N-acylimines. In this paper, a convenient route to synthesize N-carbamoyl-N,O-acetals and N-acyl-N,O-acetals from enecarbamates and enamides in the presence of alcs. as the solvents and nucleophile sources under Bronsted acid conditions was reported. This strategy could be used to prepare various N,O-acetals from a range of enecarbamates and enamides with light alcs., and the products are obtained in good yields (52-98%). The experimental process involved the reaction of tert-Butyl carbamate(cas: 4248-19-5Electric Literature of C5H11NO2)

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. The methylamines occur in small amounts in some plants. Many polyfunctional amines (i.e., those having other functional groups in the molecule) occur as alkaloids in plants—for example, mescaline, 2-(3,4,5-trimethoxyphenyl)ethylamine; the cyclic amines nicotine, atropine, morphine, and cocaine; and the quaternary salt choline, N-(2-hydroxyethyl)trimethylammonium chloride, which is present in nerve synapses and in plant and animal cells.Electric Literature of C5H11NO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2019,Organic Letters included an article by Wang, Bo; Zhou, Yu; Xu, Niuniu; Xu, Xiufang; Xu, Xiaohua; Jin, Zhong. HPLC of Formula: 2495-35-4. The article was titled 《Palladium(II)-Catalyzed Remote meta-C-H Functionalization of Aromatic Tertiary Amines》. The information in the text is summarized as follows:

Pd(II)-catalyzed remote C-H olefination of aromatic tertiary amines was achieved with high meta selectivity. With the assistance of an elaborated template, C-H functionalization of unreactive aryl tertiary amines, hindered by the p-π conjugation between the lone-pair electrons of the nitrogen atom and the Ph ring, was realized with high meta regioselectivity via a quaternary ammonium salt assembly. Apart from the distance and geometry of the template, the conformation of the arene substrate also plays a crucial role in the templated-assisted remote C-H functionalization. The experimental part of the paper was very detailed, including the reaction process of Benzyl acrylate(cas: 2495-35-4HPLC of Formula: 2495-35-4)

Benzyl acrylate(cas: 2495-35-4) has been used in preparation of high refractive index polyacrylates. Benzyl acrylate is used in the preparation of heptanoic acid benzyl ester. It is used to prepare polybenzylacrylate using azobisisobutyronitrile as initiator.HPLC of Formula: 2495-35-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics