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1638114-50-7

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1638114-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638114-50-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,1,1 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1638114-50:
(9*1)+(8*6)+(7*3)+(6*8)+(5*1)+(4*1)+(3*4)+(2*5)+(1*0)=157
157 % 10 = 7
So 1638114-50-7 is a valid CAS Registry Number.

1638114-50-7Downstream Products

1638114-50-7Relevant articles and documents

A biomimetic catalytic aerobic functionalization of phenols

Esguerra, Kenneth Virgel N.,Fall, Yacoub,Lumb, Jean-Philip

supporting information, p. 5877 - 5881 (2014/06/10)

The importance of aromatic C-O, C-N, and C-S bonds necessitates increasingly efficient strategies for their formation. Herein, we report a biomimetic approach that converts phenolic C-H bonds into C-O, C-N, and C-S bonds at the sole expense of reducing dioxygen (O2) to water (H 2O). Our method hinges on a regio- and chemoselective copper-catalyzed aerobic oxygenation to provide ortho-quinones. ortho-Quinones are versatile intermediates, whose direct catalytic aerobic synthesis from phenols enables a mild and efficient means of synthesizing polyfunctional aromatic rings. The direct approach: Polyfunctional aromatic rings have been generated by direct functionalization of C-H bonds to C-O, C-N, and C-S bonds at the sole expense of reducing O2 to H2O. The method hinges on a regio- and chemoselective, copper-catalyzed aerobic oxygenation of phenols to provide ortho-quinones (see scheme), thus mimicking the ubiquitous biosynthetic pathway of melanogenesis.

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