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37059-43-1

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37059-43-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 37059-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,0,5 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 37059-43:
(7*3)+(6*7)+(5*0)+(4*5)+(3*9)+(2*4)+(1*3)=121
121 % 10 = 1
So 37059-43-1 is a valid CAS Registry Number.

37059-43-1Downstream Products

37059-43-1Relevant articles and documents

Amination, III. Trimethylsilanol as Leaving Group, V. Silylation - Amination of Hydroxy N-Heterocycles

Vorbrueggen, Helmut,Krolikiewicz, Konrad

, p. 1523 - 1541 (2007/10/02)

Hydroxy N-heterocycles such as 18, 21, 26, and others are efficiently aminated in a one-step/one-pot procedure by silylation-amination to give 20, 23 - 25 etc.Silylation converts aromatic hydroxy N-heterocycles into activated and lipophilic intermediates of type 3, 8 which react in situ with ammonia, primary or secondary amines to form the corresponding mono-, bis- or tris-aminated products (5, 10).This addition-elimination of amines to O-silylated heterocycles is Lewis acid-catalysed and proceeds usually in high yields if the leaving group trimethylsilanol is converted in situ by excess silylated agent into hexamethyldisiloxane.Scope and limitations of this simple procedure are discussed.

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