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4-Chlorophenyl thiocyanate is an organic compound with the chemical formula C7H4ClNS. It is a colorless to pale yellow crystalline solid that is soluble in organic solvents such as ethanol and acetone. 4-Chlorophenyl thiocyanate is primarily used as an intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other organic compounds. It is also employed as a reagent in chemical reactions, particularly in the preparation of thiourea derivatives. Due to its reactivity, 4-chlorophenyl thiocyanate should be handled with care, as it can cause irritation to the skin, eyes, and respiratory system.

3226-37-7

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3226-37-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3226-37-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,2 and 6 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3226-37:
(6*3)+(5*2)+(4*2)+(3*6)+(2*3)+(1*7)=67
67 % 10 = 7
So 3226-37-7 is a valid CAS Registry Number.
InChI:InChI=1/C7H4ClNS/c8-6-1-3-7(4-2-6)10-5-9/h1-4H

3226-37-7Relevant academic research and scientific papers

Facile Synthesis of Organic Thiocyanates from Organozinc(II) Thiocyanates and N-chlorosuccinimide

Takagi, Kentaro,Takachi, Hideaki,Hayama, Naomi

, p. 509 - 510 (1992)

The reaction of organozinc(II) compounds, generated in situ from organolithiums and zinc(II) thiocyaniate, with N-chlorosuccinimide (NCS) afforded the corresponding organic thiocyanates in good yields.

Selectfluor-initiated cyanation of disulfides to thiocyanates

Zhou, Pengpeng,Chen, Chuan,Li, Shubai

, p. 376 - 380 (2020/02/13)

A Selectfluor-initiated cyanation of disulfides to thiocyanates has been developed. In this process, Selectfluor was employed as the oxidant and trimethylsilyl cyanide was used as the cyanation reagent. It provides an eco-friendly and simple way to synthesize the thiocyanates.

An electrochemical method for deborylative seleno/thiocyanation of arylboronic acids under catalyst- And oxidant-free conditions

He, Dongdong,Yao, Jiaojiao,Ma, Boling,Wei, Jinghao,Hao, Guangguo,Tuo, Xun,Guo, Shengmei,Fu, Zhengjiang,Cai, Hu

supporting information, p. 1559 - 1564 (2020/03/26)

An electrochemical deborylative seleno/thiocyanation of arylboronic acids has been well established to synthesize the corresponding aryl seleno/thiocyanates with good functional group tolerance under ambient conditions. A gram-scale reaction has been performed to highlight the advantages of the protocol. Preliminary mechanistic studies indicate that the oxidation of the seleno/thiocyanate anion occurs prior to that of the arylboronic acid substrate in galvanostatic mode, and that free radicals are involved in the process.

Fluorium-Initiated Dealkylative Cyanation of Thioethers to Thiocyanates

Chen, Yang,Qi, Hongyi,Chen, Ning,Ren, Demin,Xu, Jiaxi,Yang, Zhanhui

, p. 9044 - 9050 (2019/08/12)

Thioethers are converted to thiocyanates via fluorium-initiated dealkylative cyanation. Selectfluor is used as the oxidant, and trimethylsilyl cyanide is used as the cyanation reagent. The well-streamlined procedure is user-friendly, operationally simple, and step-economical. The current mechanistic studies show that the sulfur radical cation and cyano radical are both involved. They combine to deliver cyanosulfonium, an intermediate toward thiocyanate after dealkylation. Alternatively, a nucleophilic mechanism is also possible. Our dealkyaltive cyanation is also efficient in synthesizing thiocyanates with strongly electrophilic functionalities.

Direct Photocatalytic S-H Bond Cyanation with Green cN Source

Guo, Wei,Tan, Wen,Zhao, Mingming,Zheng, Lvyin,Tao, Kailiang,Chen, Deliang,Fan, Xiaolin

supporting information, p. 6580 - 6588 (2018/05/29)

Herein we report a novel C-S bond cleavage and reconstruction strategy for the synthesis of thiocyanates through direct photocatalytic S-H bond cyanation from thiols and inorganic thiocyanate salts. In our strategy, the unprecedented example of cutting off C-S bond of SCN- to deliver the green CN sources is demonstrated. This transformation features nontoxic and inexpensive CN sources, available starting materials, metal-/base-/ligand-/peroxide-free, high step economy and mild conditions. It leads to the construction of various thiocyanates and some medicinally and biologically active thiocyanate-containing molecules.

Preparation method for thiocyanide compound

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Paragraph 0122; 0123; 0128; 0129, (2018/06/16)

The invention discloses a preparation method for a thiocyanide compound. The preparation method comprises the following steps: taking a sulfhydryl compound, thiocyanate as raw materials, taking rose-bengal, eosine Y or eosin B as a catalyst, performing illumination, generating a thiocyanide compound after the illumination reaction. According to the preparation method provided by the invention, thiocyanide is decomposed into thiocyanate ions; the sulfhydryl compound generates sulfhydryl radical under the action of light and the catalyst, and the sulfhydryl radical is used for attacking carbon atoms in thiocyanate ions to obtain a intermediate; sulfide is removed from the intermediate to obtain the thiocyanide compound. The rose-bengal, the eosine Y or the eosin B used by the method containno heavy metal ion, and the adverse effect on the performance of the thiocyanide compound by the heavy metal ion residue is avoided; in addition, the catalyst is easily removed, so that a favorable condition is provided for the preparation of the thiocyanide compound with higher purity.

Synthesis of perfluoroalkyl thioethers from aromatic thiocyanates by iron-catalysed decarboxylative perfluoroalkylation

Exner, Benjamin,Bayarmagnai, Bilguun,Matheis, Christian,Goossen, Lukas J.

supporting information, p. 89 - 93 (2017/06/23)

Easily available aryl and heteroaryl thiocyanates were converted into the corresponding perfluoroalkyl thioethers via decarboxylation of potassium perfluoroalkylcarboxylates, catalysed by the inexpensive and environmentally benign iron(III) chloride.

One-pot synthesis of (ethoxycarbonyl)difluoromethylthioethers from thiocyanate sodium and ethyl 2-(trimethylsilyl)-2,2-difluoroacetate (TMS-CF2CO2Et)

Xu, Lijun,Wang, Hongyu,Zheng, Changwu,Zhao, Gang

, p. 6057 - 6066 (2017/09/23)

An efficient one-pot cascade methodology for the synthesis of (ethoxycarbonyl)difluoromethyl thioethers is described. Benzyl, allyl, alkyl halides or diazonium salts as the starting materials together with thiocyanate sodium and TMS-CF2CO2Et in the presence of CsF or NaOAc afford a variety of the fluoroalkylthiolated products in moderate to good yields.

Molybdenum-doped α-MnO2 as an efficient reusable heterogeneous catalyst for aerobic sulfide oxygenation

Uematsu, Tsubasa,Miyamoto, Yumi,Ogasawara, Yoshiyuki,Suzuki, Kosuke,Yamaguchi, Kazuya,Mizuno, Noritaka

, p. 222 - 233 (2015/12/31)

Oxygenation of sulfides to sulfoxides and/or sulfones is an important transformation, and the development of efficient heterogeneous catalysts for oxygenation, which can utilize O2 as the terminal oxidant, is highly desired. In this study, we have successfully developed manganese oxide-based efficient heterogeneous catalysts for aerobic oxygenation of sulfides. Firstly, we prepared four kinds of manganese oxides possessing different crystal structures, such as α-MnO2, β-MnO2, γ-MnO2, and δ-MnO2, and their structure-activity relationships were examined for the aerobic oxygenation of thioanisole. Amongst them, α-MnO2 showed the best catalytic performance for the oxygenation. Moreover, α-MnO2 was highly stable during the catalytic oxygenation possibly due to the tunnel K+ ions. In order to further improve the catalytic performance of α-MnO2, substitutional doping of transition metal cations, such as Mo6+, V5+, Cr3+, and Cu2+, into the framework was carried out. Undoped α-MnO2 possessed a fibrous morphology. When high-valent transition metal cations were doped, especially Mo6+, the lengths of the fibers drastically shortened to form grain-like aggregates of ultrafine nanocrystals, resulting in an increase in specific surface areas and the numbers of catalytically active surface sites. In the presence of Mo6+-doped α-MnO2 (Mo-MnO2), various kinds of sulfides could efficiently be oxidized to the corresponding sulfoxides as the major products. The observed catalysis was truly heterogeneous, and Mo-MnO2 could repeatedly be reused while keeping its high catalytic performance. Besides sulfide oxygenation, Mo-MnO2 could efficiently catalyze several aerobic oxidative functional group transformations through single-electron transfer oxidation processes, namely, oxygenation of alkylarenes, oxidative α-cyanation of trialkylamines, and oxidative S-cyanation of benzenethiols.

Transition-metal-free synthesis of thiocyanato- or nitro-arenes through diaryliodonium salts

Li, Xiao-Hua,Li, Liang-Gui,Mo, Xue-Ling,Mo, Dong-Liang

, p. 963 - 970 (2016/07/07)

A transition-metal-free approach to facile synthesis of thiocyanato- and nitro-arenes was developed from KSCN (potassiumthiocyanate) or NaNO2with diaryliodonium salts in good yields under mild conditions. The reaction was compatible with a variety of sensitive functional substituents such as halides and nitro and ester groups. The usefulness of arylation products has been realized. (Formula Present).

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