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33131-36-1

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33131-36-1 Usage

Synthesis Reference(s)

Canadian Journal of Chemistry, 49, p. 2143, 1971 DOI: 10.1139/v71-347

Check Digit Verification of cas no

The CAS Registry Mumber 33131-36-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,1,3 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 33131-36:
(7*3)+(6*3)+(5*1)+(4*3)+(3*1)+(2*3)+(1*6)=71
71 % 10 = 1
So 33131-36-1 is a valid CAS Registry Number.

33131-36-1Relevant articles and documents

Palladium-catalyzed coupling reaction of -diazocarbonyl compounds with aromatic boronic acids or halides

Peng, Cheng,Yan, Guobin,Wang, Yan,Jiang, Yubo,Zhang, Yan,Wang, Jianbo

experimental part, p. 4154 - 4168 (2011/02/25)

Efficient palladium-catalyzed cross-coupling reactions of -diazocarbonyl compounds and arylboronic acids or aryl halides have been developed. The reaction proceeds smoothly for a range of diazo compounds, boronic acids, and halides. The coupling reaction conditions tolerate various substituents on the aromatic rings of the substrates, such as chloro, fluoro, acyl, oxo, ester, and nitro groups. This coupling reaction constitutes a novel access to -aryl-substituted ,-unsaturated carbonyl compounds. Mechanistically, palladium-carbene is supposed to be the key intermediate; its formation is followed by migratory insertion of an aryl group to the carbenic carbon of the palladium-carbene complex and subsequent -hydride elimination. Kinetic isotope effect (KIE) data measured for intra- and intermolecular competition experiments suggest that -hydride elimination is not involved in the rate-determining step

Photochemical Wittig Reaction of Quasi-phosphonium Ylides

Tomioka, Hideo,Ichikawa, Naoki,Murata, Hideki

, p. 193 - 195 (2007/10/02)

α-(Methoxycarbonyl)benzylidene quasi-phosphonium ylides, which are unreactive towards most carbonyl compounds, are found to undergo the Wittig reaction upon irradiation; irradiation with acyclic carbonyl compounds, e.g. benzaldehydes and acetophenones, af

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