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1669-51-8

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1669-51-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1669-51-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,6 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1669-51:
(6*1)+(5*6)+(4*6)+(3*9)+(2*5)+(1*1)=98
98 % 10 = 8
So 1669-51-8 is a valid CAS Registry Number.
InChI:InChI=1/C15H13BrO/c16-14-9-7-13(8-10-14)15(17)11-6-12-4-2-1-3-5-12/h1-5,7-10H,6,11H2

1669-51-8Relevant articles and documents

Nickel-catalyzed α-alkylation of ketones with benzyl alcohols

Wu, Di,Wang, Yubin,Li, Min,Shi, Lei,Liu, Jichang,Liu, Ning

, (2021/11/04)

We reported an efficient method for α-alkylation of ketones with benzyl alcohols using the pyridine-bridged pincer-type N-heterocyclic carbenes nickel complexes as catalysts. A wide range of ketones and benzyl alcohols were efficiently converted into various alkylated products in moderate to high yields. In addition, these nickel complexes were also successfully applied for the synthesis of a wide range of quinoline derivatives.

Neutral-eosin Y-catalyzed regioselective hydroacylation of aryl alkenes under visible-light irradiation

Liu, Haiwang,Xue, Fei,Wang, Mu,Tang, Xinxin,Wu, Jie

supporting information, p. 406 - 410 (2020/12/30)

Styrene derivatives were hydroacylated with exclusive anti-Markovnikov selectivity by using neutral eosin Y as a direct hydrogen-atom-transfer (HAT) catalyst under visible-light irradiation. Aldehydes and styrenes with various substituents were tolerated (>20 examples), giving the corresponding products in moderate to high yields. The key acyl radical intermediate was generated from a direct HAT process induced by photoexcited eosin Y. Subsequent addition to styrenes and a reverse HAT process generated the ketone products.

Borane-Catalyzed, Chemoselective Reduction and Hydrofunctionalization of Enones Enabled by B-O Transborylation

Nicholson, Kieran,Langer, Thomas,Thomas, Stephen P.

, p. 2498 - 2504 (2021/04/13)

The use of stoichiometric organoborane reductants in organic synthesis is well established. Here these reagents have been rendered catalytic through an isodesmic B-O/B-H transborylation applied in the borane-catalyzed, chemoselective alkene reduction and formal hydrofunctionalization of enones. The reaction was found to proceed by a 1,4-hydroboration of the enone and B-O/B-H transborylation with HBpin, enabling catalyst turnover. Single-turnover and isotopic labeling experiments supported the proposed mechanism of catalysis with 1,4-hydroboration and B-O/B-H transborylation as key steps.

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