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116858-83-4

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116858-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116858-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,8,5 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 116858-83:
(8*1)+(7*1)+(6*6)+(5*8)+(4*5)+(3*8)+(2*8)+(1*3)=154
154 % 10 = 4
So 116858-83-4 is a valid CAS Registry Number.

116858-83-4Relevant articles and documents

Organic Synthesis with Carbon Monoxide: The Synthesis of Carbamoylstannanes and Aromatic Carbamoylation

Lindsay, Charles M.,Widdowson, David A.

, p. 569 - 574 (2007/10/02)

The lithium salts of secondary amines were carbonylated and the carbamoyl-lithium species (1) produced quenched with ketones, alkyl halides and trialkyltin chlorides.The latter gave tributyl-, triphenyl- and trimethyl-carbamoylstannanes (2) in good yield.These were found to undergo palladium-catalysed cross coupling with aryl, alkenyl, and hetaryl halides (I, Br) to give amides (4), (5), and (6) respectively, in fair to excellent yield, the trimethyl series being the reagents of choice.

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