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104189-20-0

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104189-20-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104189-20-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,1,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 104189-20:
(8*1)+(7*0)+(6*4)+(5*1)+(4*8)+(3*9)+(2*2)+(1*0)=100
100 % 10 = 0
So 104189-20-0 is a valid CAS Registry Number.

104189-20-0Downstream Products

104189-20-0Relevant articles and documents

N,N-DISUBSTITUTED LITHIUM BIS(CARBAMOYL)CUPRATE. A CONVENIENT COMPLEX FOR ONE-POT CONVERSIONS OF AMINES TO FORMAMIDES, OXAMIDES, CARBAMATES, AND OXAMIC ACIDS

Wakita, Yoshiaki,Noma, Shun-Ya,Maeda, Minoru,Kojima, Masaharu

, p. 379 - 390 (1985)

Lithium bis(carbamoyl)cuprates (2) were readily derived from secondary amines such as N-methylaniline, N-methylbenzylamine, and diethylamine, under mild carbonylation conditions (0 deg C, 1 atm of carbon monoxide), but diphenylamine and benzylphenylamine were unsuitable as the starting materials.The carbamoylcopper complexes 2 formed in ether were readily converted to the corresponding formamides, oxamides, carbamates, and oxamic acids by the appropriate treatment.The formation and stability of 2 depended much on the solvent used.The higher polarity effect of the solvent (DME, THF, and HMPA) made 2 less stable and caused concomitant evolution of carbon monoxide in further reactions.A palladium catalyst was found to be effective for cross-coupling reactions of 2 with iodobenzene or (E)-β-bromostyrene.

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