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81336-59-6

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81336-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81336-59-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,3 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81336-59:
(7*8)+(6*1)+(5*3)+(4*3)+(3*6)+(2*5)+(1*9)=126
126 % 10 = 6
So 81336-59-6 is a valid CAS Registry Number.

81336-59-6Relevant articles and documents

Highly chemoselective deoxygenation of N-heterocyclic: N -oxides under transition metal-free conditions

Kim, Se Hyun,An, Ju Hyeon,Lee, Jun Hee

supporting information, p. 3735 - 3742 (2021/05/04)

Because their site-selective C-H functionalizations are now considered one of the most useful tools for synthesizing various N-heterocyclic compounds, the highly chemoselective deoxygenation of densely functionalized N-heterocyclic N-oxides has received much attention from the synthetic chemistry community. Here, we provide a protocol for the highly chemoselective deoxygenation of various functionalized N-oxides under visible light-mediated photoredox conditions with Na2-eosin Y as an organophotocatalyst. Mechanistic studies imply that the excited state of the organophotocatalyst is reductively quenched by Hantzsch esters. This operationally simple technique tolerates a wide range of functional groups and allows high-yield, multigram-scale deoxygenation. This journal is

DIRECT CONVERSION OF PHENOLS INTO AMIDES AND ESTERS OF BENZOIC ACID

-

Page/Page column 16; 19, (2011/10/12)

A method is provided for the preparation of an aromatic carboxylic acid aryl ester or an N-aryl aromatic carboxamide. The method comprises contacting an O,O-diaryl thiocarbonate or an O-aryl-N-aryl thiocarbamate with a reactant that regioselectively reacts with sulfur, which contact causes an O-neophyl rearrangement, thereby forming either the aromatic carboxylic acid aryl ester or the N-aryl aromatic carboxamide, respectively.

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