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127783-75-9

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127783-75-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127783-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,8 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 127783-75:
(8*1)+(7*2)+(6*7)+(5*7)+(4*8)+(3*3)+(2*7)+(1*5)=159
159 % 10 = 9
So 127783-75-9 is a valid CAS Registry Number.

127783-75-9Relevant articles and documents

Synthetic method of 4-hydroxy-4'-biphenyl nitrile

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Paragraph 0007; 0028, (2018/09/21)

The invention discloses a preparation method of 4-hydroxy-4'-biphenyl nitrile. The method comprises: reacting 4-hydroxybiphenyl (2) with acetyl chloride to generate 4-acetic acid biphenyl (3), reacting 4-acetic acid biphenyl (3) with oxalyl chloride under aluminium trichloride catalysis to generate 4-chlorocarbonyl-4'-acetic acid biphenyl (4), reacting 4-chlorocarbonyl-4'-acetic acid biphenyl (4)with ammonia water to generate 4-formamido-4'-acetic acid biphenyl (5), dehydrating 4-formamido-4'-acetic acid biphenyl (5) under phosphorus oxychloride catalysis to generate 4-cyano-4'-acetic acid biphenyl (6), and deacetylating 4-cyano-4'-acetic acid biphenyl (6) in the presence of sodium hydroxide to generate 4-hydroxy-4'-biphenyl nitrile (1). The method is simple in process, is economic and eco-friendly, and is suitable for industrial amplification requirement.

Palladium catalyzed cross-couplings of organozincs in ionic liquids

Sirieix,Ossberger,Betzemeier,Knochel

, p. 1613 - 1615 (2007/10/03)

Negishi cross-coupling reactions between aryl- or benzylzinc halides and various aryl iodides smoothly occur in ionic liquids in the presence of the new ionic phosphine ligand 2. This solvent allows a facile work-up and rapid cross-coupling reactions at r

Process for the preparation of unsymmetric biaryl compounds

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, (2008/06/13)

Unsymmetric biaryl compounds are prepared by coupling two different halogenoaromatics by reaction with a metal and carrying out the reaction in the presence of catalytic amounts of a nickel compound, a promoter and a phosphorus-containing ligand.

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