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51491-68-0

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51491-68-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51491-68-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,4,9 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 51491-68:
(7*5)+(6*1)+(5*4)+(4*9)+(3*1)+(2*6)+(1*8)=120
120 % 10 = 0
So 51491-68-0 is a valid CAS Registry Number.

51491-68-0Relevant academic research and scientific papers

RhIII-Catalyzed C-H (Het)arylation/Vinylation of N-2,6-Difluoroaryl Acrylamides

Wang, Huai-Wei,Qiao, Yu-Han,Wu, Jia-Xue,Wang, Qiu-Ping,Tian, Meng-Xin,Li, Yong-Fei,Yao, Qing-Xia,Li, Da-Cheng,Dou, Jian-Min,Lu, Yi

, p. 656 - 662 (2021)

RhIII-catalyzed sp2 C-H cross-coupling of acrylamides with organoboron reactants has been accomplished using a commercially available N-2,6-difluoroaryl acrylamide auxiliary. A broad range of aryl and vinyl boronates as well as a variety of heterocyclic boronates with strong coordinating ability can serve as the coupling partners. This transformation proceeds under moderate reaction conditions with excellent functional group tolerance and high regioselectivity.

Ni-Catalyzed enantioselective reductive arylcyanation/cyclization of: N -(2-iodo-aryl) acrylamide

Dong, Kaiwu,Ren, Xinyi,Shen, Chaoren,Wang, Guangzhu

, p. 1135 - 1138 (2022/02/03)

A Ni/(S,S)-BDPP-catalyzed intramolecular Heck cyclization of N-(2-iodo-aryl) acrylamide with 2-methyl-2-phenylmalononitrile was developed to give oxindoles with good enantioselectivities. We found that utilizing such an electrophilic cyanation reagent cou

Bromo Radical-Mediated Photoredox Aldehyde Decarbonylation towards Transition-Metal-Free Hydroalkylation of Acrylamides at Room Temperature

Sun, Zhaozhao,Huang, Huawen,Wang, Qiaolin,Deng, Guo-Jun

supporting information, p. 453 - 458 (2021/12/03)

Herein, we report a visible-light-mediated hydroalkylation reaction of alkenes using easily available aldehydes as alkyl sources via bromo radical-promoted photoredox decarbonylation. This protocol provides an alternative entry to C(sp3)?C(sp3) bond formation and features considerable advantages including mild and clean reaction conditions, obviation for transition-metal catalyst, and good functional group compatibility.

Photoredox Cyclization of N-Arylacrylamides for Synthesis of Dihydroquinolinones

Liu, Zhaosheng,Zhong, Shuai,Ji, Xiaochen,Deng, Guo-Jun,Huang, Huawen

supporting information, p. 349 - 353 (2021/12/27)

Metal- and additive-free photoredox cyclization of N-arylacrylamides is herein reported that provides a concise access to the formation of dihydroquinolinones. In this protocol, sustainable visible light was used as the energy source, and the organic light-emitting molecule 4CzIPN served as the efficient photocatalyst. This reaction system features exclusive 6-endo-trig cyclization selectivity with a generally good yield of a range of functionalized dihydroquinolinones and dihydrobenzoquinolinones. Mechanistical studies reveal the feasibility of both 1,3-H shift and intersystem crossing of the diradical intermediate.

THERAPEUTIC COMPOUNDS AND METHODS OF USE

-

Paragraph 0646; 0647; 0648, (2021/05/21)

The invention relates to compounds and methods of using said compounds, as well as pharmaceutical compositions containing such compounds, for treating diseases and conditions mediated by TEAD, such as cancer.

Effect of Transition Metals on Chemodivergent Cross-Coupling of Acrylamides with Vinyl Acetate via C-H Activation

Logeswaran, Ravichandran,Jeganmohan, Masilamani

supporting information, p. 5679 - 5683 (2021/08/03)

A novel chemodivergent cross-coupling of acrylamides and vinyl acetates has been realized via metal-catalyzed vinylic C-H activation. The selective olefinic C-H vinylation and alkenylation reaction was examined with a variety of differently functionalized acrylamides. The reaction efficiently generates a range of highly synthetically valuable butadienes with good functional group tolerance in good to moderate yields. A possible catalytic reaction mechanism involving the chelation-assisted olefinic C-H activation via an acetate-assisted deprotonation pathway is proposed.

Visible-Light Mediated Metal-Free 6π-Photocyclization of N-Acrylamides: Thioxanthone Triplet Energy Transfer Enables the Synthesis of 3,4-Dihydroquinolin-2-ones

Oddy, Meghan J.,Kusza, Daniel A.,Petersen, Wade F.

supporting information, p. 8963 - 8967 (2021/11/24)

An efficient thioxanthone-catalyzed triplet energy transfer process for the synthesis of 3,4-dihydroquinolin-2-ones via a 6π-photocyclization is reported. Featuring a rare example of a metal-free formal C(sp2)-H/C(sp3)-H arylation mediated by visible-ligh

Electrochemical oxidative: Z -selective C(sp2)-H chlorination of acrylamides

Coles, Simon J.,Hareram, Mishra Deepak,Harnedy, James,Morrill, Louis C.,Tizzard, Graham J.

supporting information, p. 12643 - 12646 (2021/12/07)

An electrochemical method for the oxidative Z-selective C(sp2)-H chlorination of acrylamides has been developed. This catalyst and organic oxidant free method is applicable across various substituted tertiary acrylamides, and provides access to a broad range of synthetically useful Z-β-chloroacrylamides in good yields (22 examples, 73% average yield). The orthogonal derivatization of the products was demonstrated through chemoselective transformations and the electrochemical process was performed on gram scale in flow.

SUBSTITUTED TRICYCLIC AMIDES, ANALOGUES THEREOF, AND METHODS USING SAME

-

Page/Page column 144; 217-218, (2021/11/20)

The present disclosure includes substituted tricyclic amides, or analogues thereof of formula (I) (I), wherein X, Y, ring A, R1, R5, R6 and R7 are as defined herein, and compositions comprising compounds of formula (I) that can be used to treat or prevent hepatitis B virus (HBV) and/or hepatitis D virus (HDV) infections in a patient.

3,3′-Disubstituted Oxindoles Formation via Copper-Catalyzed Arylboration and Arylsilylation of Alkenes

Liang, Ren-Xiao,Chen, Ru-Yi,Zhong, Chao,Zhu, Jia-Wen,Cao, Zhong-Yan,Jia, Yi-Xia

supporting information, p. 3215 - 3218 (2020/04/10)

Arylboration and arylsilylation reactions of N-(2-iodoaryl)acrylamides with bis(pinacolato)-diboron (B2pin2) or PhMe2Si-Bpin are developed by using simple CuOAc as the sole catalyst. A range of boron-or silane-bearing 3,3′-disubstituted oxindoles are obtained in moderate to excellent yields. The reaction is proposed to proceed via a domino sequence involving intermolecular olefin borylcupration or silylcupration followed by intramolecular coupling of an alkyl-Cu intermediate with aryl iodide.

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