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139747-87-8

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139747-87-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139747-87-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,4 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139747-87:
(8*1)+(7*3)+(6*9)+(5*7)+(4*4)+(3*7)+(2*8)+(1*7)=178
178 % 10 = 8
So 139747-87-8 is a valid CAS Registry Number.

139747-87-8Downstream Products

139747-87-8Relevant articles and documents

N-Heterocyclic carbene as a Br?nsted base catalyst for the amination of naphthol derivatives and alcoholysis of glutaric anhydrides

Jayakrishnan,Tamilarasu,Jincy,Kaliyamoorthy, Alagiri

supporting information, (2019/09/30)

A non-covalent Br?nsted-basic N-heterocyclic carbene catalyzed (NHC) Friedel-Crafts type amination of naphthol derivatives using dialkyl azodicarboxylates as the aminating source and alcoholysis of various glutaric anhydrides using alcohol as pronucleophile is presented. Both of these reactions are performed in the presence of either commercially available free-carbene catalyst or in situ-generated carbene catalyst. Friedel-Crafts type amination reaction is an example of a hydroxy group facilitated amination reaction. Both reactions proceed via in situ activations of –OH group by the carbene catalyst through hydrogen bonding interaction and furnish the relevant products in moderate to excellent yields.

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