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49747-52-6

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49747-52-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49747-52-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,7,4 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 49747-52:
(7*4)+(6*9)+(5*7)+(4*4)+(3*7)+(2*5)+(1*2)=166
166 % 10 = 6
So 49747-52-6 is a valid CAS Registry Number.

49747-52-6Relevant articles and documents

Direct conversion of secondary propargyl alcohols into 1,3-di-arylpropanoneviaDBU promoted redox isomerization and palladium assisted chemoselective hydrogenation in a single pot operation

Bera, Mrinal K.,Chandra, Shubhadeep,De, Rimpa,Savarimuthu, S. Antony

, p. 17871 - 17877 (2021/10/12)

Palladium(ii)acetate is found to be an efficient catalyst for the single-step conversion of secondary propargyl alcohols to 1,3-diarylpropanone derivatives under mild basic conditions. The reaction is believed to proceedviaredox isomerisation of secondary propargyl alcohols followed by chemoselective reduction of an enone double bond with formic acid as an adequate hydrogen donor. A large number of 1,3-diarylpropanone derivatives may readily be prepared from a milligram to a multigram scale.

New Friedel-Crafts strategy for preparing 3-acylindoles

Li, Lian-Hua,Niu, Zhi-Jie,Liang, Yong-Min

supporting information, p. 7792 - 7796 (2018/11/21)

A selective Friedel-Crafts acylation of indoles via an unusual cleavage of the amide C-N bond was achieved by triflic anhydride activation. This method offers rapid efficient access to high-biological-value 3-acylindoles, performs a series of scrupulous mechanistic studies and offers a strong courage that amide synthons can form new C-C bonds under transition-metal-free conditions.

[Pd]-Catalyzed Intermolecular Coupling and Acid Mediated Intramolecular Cyclodehydration: One-Pot Synthesis of Indenes

Niharika, Pedireddi,Satyanarayana, Gedu

supporting information, p. 971 - 979 (2018/02/22)

An efficient one-pot synthesis of indenes from simple starting materials is presented. This process involves a dual C–C bond formation through an intermolecular Heck coupling reaction followed by acid-mediated intramolecular cyclodehydration. The strategy

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