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861631-61-0

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861631-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 861631-61-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,6,3 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 861631-61:
(8*8)+(7*6)+(6*1)+(5*6)+(4*3)+(3*1)+(2*6)+(1*1)=170
170 % 10 = 0
So 861631-61-0 is a valid CAS Registry Number.

861631-61-0Downstream Products

861631-61-0Relevant articles and documents

A highly active catalyst for the reductive cyclization of ortho-nitrostyrenes under mild conditions

Davies, Ian W.,Smitrovich, Jacqueline H.,Sidler, Rick,Qu, Chuanxing,Gresham, Venita,Bazaral, Charles

, p. 6425 - 6437 (2007/10/03)

A mild and efficient method for the palladium-catalyzed reductive cyclization of ortho-nitrostyrenes to afford indoles is reported. Treatment of ortho-nitrostyrenes with 0.1 mol% palladium (II) trifluoroacetate [Pd(TFA) 2] and 0.7 mol% 3,4,7,8-tetramethyl-1,10-phenanthroline (tm-phen) in DMF at 15 psig CO and 80°C afforded indoles in good to excellent yields. When the reaction was conducted in toluene, the corresponding N-hydroxyindole was isolated. A mechanism that accounts for the formation of N-hydroxyindole is proposed.

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