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116140-28-4

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116140-28-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116140-28-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,1,4 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 116140-28:
(8*1)+(7*1)+(6*6)+(5*1)+(4*4)+(3*0)+(2*2)+(1*8)=84
84 % 10 = 4
So 116140-28-4 is a valid CAS Registry Number.

116140-28-4Relevant articles and documents

Preparation of polyfunctional pyridines by a palladium(0)-catalyzed cross-coupling of functionalized aryl Grignard reagents

Bonnet, Véronique,Mongin, Florence,Trécourt, Francois,Quéguiner, Guy,Knochel, Paul

, p. 5717 - 5719 (2001)

Difunctionalized pyridines can be prepared by a Pd(0)-catalyzed cross-coupling of functionalized arylmagnesium compounds with chloro- or bromopyridines at temperatures as low as -40°C. An addition-elimination mechanism involving a palladate intermediate is proposed.

Five-membered azole heterocyclic compound and its preparation method, pharmaceutical composition and use thereof

-

Paragraph 0644; 0645; 0646, (2017/02/28)

The present invention relates to a five-membered azole heterocycle compound represented by the following general formula (I), a preparation method of the five-membered azole heterocycle compound, a drug composition of the five-membered azole heterocycle compound, and a use of the five-membered azole heterocycle compound in preparation of drugs for prevention or treatment of TGR5-mediated diseases. The formula (I) is represented by the instruction.

Selective Co/Ti cooperatively catalyzed biaryl couplings of aryl halides with aryl metal reagents

Zeng, Jing,Liu, Kun Ming,Duan, Xin Fang

supporting information, p. 5342 - 5345 (2013/11/06)

Various aryl bromides or chlorides, including those bearing a free COOH, OH, CONHR, and SO2NHR group, coupled with aryl magnesium or lithium reagents in the presence of 7.5 mol % CoCl2/15 mol % PBu3 and substoichiometric Ti(OEt)4 (40 mol % to ArM) at room temperature in high yields with high chemo- and regioslectivity. This simple reaction represents the first example of Co/Ti cooperative catalysis which plays a key role in suppressing undesired homocouplings.

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