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1224178-37-3

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1224178-37-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1224178-37-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,4,1,7 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1224178-37:
(9*1)+(8*2)+(7*2)+(6*4)+(5*1)+(4*7)+(3*8)+(2*3)+(1*7)=133
133 % 10 = 3
So 1224178-37-3 is a valid CAS Registry Number.

1224178-37-3Upstream product

1224178-37-3Relevant articles and documents

Mild and efficient oxy-iodination of alkynes and phenols with potassium iodide and tert-butyl hydroperoxide

Rajender Reddy,Venkateshwar,Uma Maheswari,Santhosh Kumar

, p. 2170 - 2173 (2010)

An efficient synthesis of 1-iodoalkynes and iodophenols was easily achieved by employing simple KI and TBHP. The reaction does not involve the use of a metal and base combination. A variety of substituted alkynes and phenols were prepared with good to excellent yield.

Hypervalent Iodine Mediated Chemoselective Iodination of Alkynes

Liu, Yan,Huang, Daya,Huang, Ju,Maruoka, Keiji

, p. 11865 - 11871 (2017)

Reported herein are practical approaches for the chemoselective mono-, di-, and tri-iodination of alkynes based on efficient oxidative iodinations catalyzed by hypervalent iodine reagents. The reaction conditions were systematically optimized by altering

Synthesis method of 1-iodo-alkyne compound

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Paragraph 0064-0067, (2021/01/24)

The invention discloses a synthetic method of a 1-iodo-alkyne compound. The preparation method comprises the following steps: in an aerobic environment, mixing terminal alkyne, soluble inorganic iodized salt, sodium phenylsulfinate or a derivative thereof

Au(I)-Catalyzed Hydration of 1-Iodoalkynes Leading to α-Iodoketones

Cazin, Catherine S. J.,Gómez-Herrera, Alberto,Hashim, Ishfaq Ibni,Nahra, Fady,Porré, Marre

supporting information, p. 6790 - 6794 (2020/11/23)

A catalytic protocol for the Au(I)-catalyzed hydration of 1-iodoalkynes is disclosed. The use of Au(I)–NHC catalyst enabled the straightforward synthesis of a variety of α-iodomethyl ketones in good to excellent yields. The utility of this simple method is further highlighted by showcasing iodination/hydration and hydration/oxidation sequential protocols leading to the construction of molecular complexity.

Chloramine Salt Mediated Oxidative Halogenation of Terminal Alkynes with KI or NaBr: Practical Synthesis of 1-Bromoalkynes and 1-Iodoalkynes

Liu, Xiaozu,Chen, Guojun,Li, Chenglong,Liu, Peijun

, p. 2051 - 2055 (2018/09/18)

A direct oxidative halogenation of terminal alkynes has been realized using chloramine-B as the oxidant and KI or NaBr as the halogen source. This reaction enables a general and practical access to synthetically valuable 1-bromoalkynes and 1-iodoalkynes i

Preparation method of 1-bromoalkyne and 1-iodoalkyne

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Paragraph 0034; 0035; 0036, (2018/11/03)

The invention discloses a preparation method of 1-bromoalkyne and 1-iodoalkyne. The preparation method comprises the following steps that terminal alkyne is adopted as a raw material, a chloramine salt and an iodine salt or a bromine salt is adopted as a

Chemoselective and stereospecific iodination of alkynes using sulfonium iodate(i) salt

Rao, Dodla S.,Reddy, Thurpu R.,Kashyap, Sudhir

supporting information, p. 1508 - 1518 (2018/03/08)

An efficient and highly chemoselective iodination of alkynes using a sulfonium iodate(i) electrophilc reagent under metal-free conditions has been realized. The reactivity of sulfonium iodate(i) salt could be significantly diverse in the presence of water

Highly efficient and recyclable catalyst for the direct chlorination, bromination and iodination of terminal alkynes

Shi, Wei,Guan, Zhipeng,Cai, Peng,Chen, Hao

, p. 199 - 204 (2017/08/10)

Direct halogenation, including chlorination, bromination and iodination of terminal alkynes, are of great importance in organic synthesis. Here an efficient and recyclable nano-Ag/g-C3N4 catalyst system was developed and proved to be remarkably active with 39 examples varied from chlorination, bromination to iodination, of which 14 runs have yielded more than 95% of the product. Recycling of the catalyst was also achieved without obvious activity loss after several runs: 99% yield was observed even after 5 runs in the bromination of phenylacetylene. The catalysts system is of low cost and easy to be prepared, making this procedure versatile, convenient and economic.

Sequential Functionalization of Alkynes and Alkenes Catalyzed by Gold(I) and Palladium(II) N-Heterocyclic Carbene Complexes

Gómez-Herrera, Alberto,Nahra, Fady,Brill, Marcel,Nolan, Steven P.,Cazin, Catherine S. J.

, p. 3381 - 3388 (2016/11/16)

The iodination of terminal alkynes for the synthesis of 1-iodoalkynes using N-iodosuccinimide in the presence of a AuI-NHC (NHC=N-heterocyclic carbene) catalyst is reported. A series of aromatic alkynes was transformed successfully into the corresponding 1-iodoalkynes in good to excellent yields under mild reaction conditions. The further use of these compounds as organic building blocks and the advantageous choice of metal-NHC complexes as catalysts for alkyne functionalization were further demonstrated by performing selective AuI-catalyzed hydrofluorination to yield (Z)-2-fluoro-1-iodoalkenes, followed by a Suzuki–Miyaura cross-coupling with aryl boronic acids catalyzed by a PdII-NHC complex to access trisubstituted (Z)-fluoroalkenes. All methodologies can be performed sequentially with only minor variations in the optimized individual reaction conditions, maintaining high efficiency and selectivity in all cases, which therefore, provides straightforward access to valuable fluorinated alkenes from commercially available terminal alkynes.

Facile and efficient synthesis of 1-haloalkynes via DBU-mediated reaction of terminal alkynes and N-haloimides under mild conditions

Li, Mengru,Li, Yueju,Zhao, Baozhong,Liang, Fushun,Jin, Long-Yi

, p. 30046 - 30049 (2014/08/05)

Directly from terminal alkynes and with N-halosuccinimides (halo = Br and I) or N-cholorophthalimide as the halogen sources, DBU as the activator, 1-haloalkynes were prepared in good to excellent yields at room temperature. Bis(bromoalkyne) and bis(iodoal

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