Category: chlorides-buliding-blocks

Application In Synthesis of Thiophene-2-sulfonyl chlorideIn 2021 ,《Asymmetric, visible light-mediated radical sulfinyl-Smiles rearrangement to access all-carbon quaternary stereocentres》 was published in Nature Chemistry. The article was written by Hervieu, Cedric; Kirillova, Mariia S.; Suarez, Tatiana; Muller, Marco; Merino, Estibaliz; Nevado, Cristina. The article contains the following contents:

The asym. construction of all-carbon quaternary centers within acyclic settings represents a long-standing challenge for synthetic chemists. Alongside polar and radical methods, rearrangement reactions represent an attractive platform, but still broadly applicable methods are in high demand. Here we report an asym., radical sulfinyl-Smiles rearrangement to access acyclic amides that bear an α-all-carbon quaternary center. Our strategy uses enantioenriched N-arylsulfinyl acrylamides such as I as acceptors for a variety of radicals produced in situ under mild photoredox conditions. The sulfinamido group not only directs the 1,4-migration of the aryl moiety onto the α-carbon of the amide, which thus governs its absolute configuration, but also functions as a traceless chiral auxiliary. The amides obtained in this multicomponent process such as II are prevalent in pharmaceuticals, agrochems. and bioactive natural products, and can be transformed into valuable chiral α,α-disubstituted acids, oxindoles as well as into β,β-disubstituted amines, highlighting the synthetic potential of this transformation. In the experiment, the researchers used Thiophene-2-sulfonyl chloride(cas: 16629-19-9Application In Synthesis of Thiophene-2-sulfonyl chloride)

Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. Application In Synthesis of Thiophene-2-sulfonyl chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Name: 4-Chlorobenzenesulfonyl chlorideIn 2022 ,《Atom-economic synthesis of β-ketosulfones based on gold-catalyzed highly regioselective hydration of alkynylsulfones》 was published in Green Chemistry. The article was written by Chikunova, Elena I.; Kukushkin, Vadim Yu.; Dubovtsev, Alexey Yu.. The article contains the following contents:

Gold(I)-catalyzed highly regioselective hydration of alkynylsulfones comprised an efficient 100% atom-economic route to β-ketosulfones. The reaction proceeded under mild mercury-free conditions (Ph3PAuNTf2 0.5-5 mol%, THF, rt or 60°C), it demonstrated a high functional group tolerance (more than 30 examples; yields up to 99%), and was easily scaled up. The developed hydration methodol. were successfully integrated into the one-pot syntheses of valuable heterocycles.4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Name: 4-Chlorobenzenesulfonyl chloride) was used in this study.

4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. The wide structural variety and divergent chemical properties of organochlorides lead to a broad range of names, applications, and properties.Name: 4-Chlorobenzenesulfonyl chloride Organochlorine compounds have wide use in many applications, though some are of profound environmental concern, with TCDD being one of the most notorious.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Product Details of 98-60-2In 2021 ,《Photoredox-catalyzed synthesis of N-unsubstituted enaminosulfones from vinyl azides and sulfinates》 was published in Tetrahedron Letters. The article was written by Mulina, Olga M.; Ilovaisky, Alexey I.; Opatz, Till; Terent’ev, Alexander O.. The article contains the following contents:

A metal-free visible light photoredox-catalyzed synthesis of N-unsubstituted enaminosulfones from vinyl azides and sodium sulfinates in moderate to high yields were described. The reaction proceeded in ethanol and used Eosin Y as a readily available photocatalyst in combination with nitrobenzene as an electron shuttle. Took into account the number of steps involved (generation of the sulfonyl radical, its addition to the double bond, elimination of mol. nitrogen with formation of an iminyl radical, followed by its reduction and protonation) as well as the number of redox-active reaction partners involved, the selectivity of the process was quite impressive. In the experimental materials used by the author, we found 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Product Details of 98-60-2)

4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. Product Details of 98-60-2 However, the extent of chlorination is difficult to control. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of C4H3ClO2S2In 2021 ,《Visible-Light-Induced 1,4-Hydroxysulfonylation of Vinyl Enynes with Sulfonyl Chlorides: The Bridge of Chloride Linking Water and Enynes》 was published in Organic Letters. The article was written by Zhang, Cheng-Yun; Zhu, Jie; Cui, Su-Hang; Xie, Xiao-Yu; Wang, Xiao-Dong; Wu, Lei. The article contains the following contents:

A novel visible-light-induced 1,4-hydroxysulfonylation of vinyl enynes I (R1 = R2 = Ph, 4-MeC6H4, 4-ClC6H4, 4-FC6H4; R1 = Ph, R2 = Me; R3 = H, n-hexyl, Ph, 4-MeOC6H4, 1-naphthyl, 3-pyridinyl, 3-thienyl, etc.) with sulfonyl chlorides R4SO2Cl (R4 = Et, Me2N, Ph, 4-MeC6H4, 2-thienyl, etc.) has been established, providing a highly efficient protocol to access multisubstituted sulfonyl allenic alcs. II. Control experiments and mechanistic studies disclose that the target products result from sequential reactions of hydroxyl and tosyl radicals, among which chloride anion plays a key role to generate the requisite hydroxyl radical, thus bridging water and enynes. Moreover, the vinyl pendant is believed to decisively affect the site-selectivity of hydroxyl radical.Thiophene-2-sulfonyl chloride(cas: 16629-19-9Electric Literature of C4H3ClO2S2) was used in this study.

Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. Electric Literature of C4H3ClO2S2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

SDS of cas: 98-60-2In 2022 ,《Boron-promoted reductive deoxygenation coupling reaction of sulfonyl chlorides for the C(sp3)-S bond construction》 was published in Chinese Chemical Letters. The article was written by Chen, Shuo; Wen, Qingru; Zhu, Yanqing; Ji, Yanru; Pu, Yu; Liu, Zhengli; He, Yun; Feng, Zhang. The article contains the following contents:

Herein, authors report a borane-promoted reductive deoxygenation coupling reaction to synthesize sulfides. This reaction features excellent functional group compatibility, high efficiency, broad substrate scope, and application in late-stage functionalization of biomols. Preliminary mechanistic studies suggest diaryl sulfides are the intermediates of this reaction. Moreover, the real active aryl sulfide anions may be generated in situ with the aid of B2pin2 and react with alkyl tosylates through a concerted SN2 pathway. The experimental part of the paper was very detailed, including the reaction process of 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2SDS of cas: 98-60-2)

4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.SDS of cas: 98-60-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 768-35-4In 2022 ,《Modular Synthesis of a Semibuckminsterfullerene》 was published in Organic Letters. The article was written by Dickinson, Cody F.; Yang, Justin K.; Yap, Glenn P. A.; Tius, Marcus A.. The article contains the following contents:

A convergent synthesis of dibenzochrysenes I [R = H, Me; R1 = Me, Et] and diindenochrysenes II [R2 = Me, Et; R3 = H, Me] that proceeded from difluorofluorenes and acetoxyenone was used to prepare 5,6,11,12-tetrabromosemibuckminsterfullerene III. The synthesis was highly modular and distinguished by proceeding through an unsym. intermediate. This work would enable the straightforward preparation of semibuckminsterfullerenes from diindenochrysenes that lack bilateral symmetry using common reagents and nonpyrolytic conditions. In addition to this study using (3-Fluorophenyl)boronic acid, there are many other studies that have used (3-Fluorophenyl)boronic acid(cas: 768-35-4Application of 768-35-4) was used in this study.

(3-Fluorophenyl)boronic acid(cas: 768-35-4) can be used to make novel liquid crystalline fluorobiphenylcyclohexenes and difluoroterphenyls by palladium-catalyzed cross-couplings also used in the synthesis of o-phenylphenols as potent leukotriene B4 receptor agonists.Application of 768-35-4

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

In 2022,Khamis, Noha; Clarkson, Guy J.; Wills, Martin published an article in Dalton Transactions. The title of the article was 《Heterocycle-containing Noyori-Ikariya catalysts for asymmetric transfer hydrogenation of ketones》.Formula: C4H3ClO2S2 The author mentioned the following in the article:

Synthesis of a range of N-(heterocyclesulfonyl)-functionalized Noyori-Ikariya catalysts was described. These complexes were prepared through a short sequence starting from C2-sym. 1,2-diphenylethylene-1,2-diamine and were characterized by a range of methods including X-ray crystallog. These complexes were active catalysts for the asym. transfer hydrogenation of a range of ketones to afford alcs. RCHOHR1 [R = Ph, 4-ClC6H4, 2-thienyl, etc.; R1 = Me, CH2Cl, CH2Ph] with high ee in most cases and notably good results for ortho-substituted acetophenones. In the part of experimental materials, we found many familiar compounds, such as Thiophene-2-sulfonyl chloride(cas: 16629-19-9Formula: C4H3ClO2S2)

Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. Formula: C4H3ClO2S2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Gediya, Shweta K.; Vyas, Vijyesh K.; Clarkson, Guy J.; Wills, Martin published an article in 2021. The article was titled 《Asymmetric Transfer Hydrogenation of α-Keto Amides; Highly Enantioselective Formation of Malic Acid Diamides and α-Hydroxyamides》, and you may find the article in Organic Letters.Computed Properties of C3H3ClO3 The information in the text is summarized as follows:

The asym. transfer hydrogenation (ATH) of α-keto-1,4-diamides using a tethered Ru/TsDPEN catalyst was achieved in high ee. Studies on derivatives identified the structural elements which led to the highest enantioselectivities in the products. The α-keto-amide reduction products were converted to a range of synthetically valuable derivatives In the experimental materials used by the author, we found Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3Computed Properties of C3H3ClO3)

Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Computed Properties of C3H3ClO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Placais, Clotilde; Donnard, Morgan; Panossian, Armen; Vors, Jean-Pierre; Bernier, David; Pazenok, Sergii; Leroux, Frederic R. published their research in Organic Letters in 2021. The article was titled 《Synthesis of 3-Amino-5-fluoroalkylfurans by Intramolecular Cyclization》.Synthetic Route of C3H3ClO3 The article contains the following contents:

A synthesis to access rarely described 3-amino-5-fluoroalkylfurans has been developed by cyclization of easily accessible fluorovinamides. This method is rapid and simple and affords the desired furans as hydrochloride salts in quant. or nearly quant. yields. It is compatible with four different fluorinated groups (-CF3, -CF2CF3, -CHF2, and -CF2Cl) and a wide range of substituents on the amine. The experimental part of the paper was very detailed, including the reaction process of Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3Synthetic Route of C3H3ClO3)

Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3) belongs to acyl chlorides. In the laboratory, acyl chlorides are generally prepared by treating carboxylic acids with thionyl chloride (SOCl2). The reaction is catalyzed by dimethylformamide and other additives.Synthetic Route of C3H3ClO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

《Alkene versus alkyne reactivity in unactivated 1,6-enynes: regio- and chemoselective radical cyclization with chalcogens under metal- and oxidant-free conditions》 was written by Mutra, Mohana Reddy; Kudale, Vishal Suresh; Li, Jing; Tsai, Wu-Hsun; Wang, Jeh-Jeng. Application of 98-60-2 And the article was included in Green Chemistry in 2020. The article conveys some information:

Herein, we have developed metal and oxidant-free visible light-promoted alkene vs. alkyne regio- and chemoselective radical cascade cyclization of electronically unbiased 1,6-enynes with chalcogens to synthesize substituted pyrrolidines bearing chalcogens. The reaction generated three new bonds, namely, C-SO2, C-C, and C-Se under extremely mild conditions. Furthermore, we achieved regio- and chemoselective mono-addition of aromatic thiophenols with unactivated 1,6-enynes. The key features of this protocol are broad substrate scope, environment-friendly conditions, operational simplicity, atom economy, and amenability to gram-scale synthesis. The mechanistic studies corroborate that the reaction proceeds via a radical pathway. In the part of experimental materials, we found many familiar compounds, such as 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Application of 98-60-2)

4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. Many organochlorine compounds have been isolated from natural sources ranging from bacteria to humans. Application of 98-60-2 Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics