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5032-08-6

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5032-08-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5032-08-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,0,3 and 2 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5032-08:
(6*5)+(5*0)+(4*3)+(3*2)+(2*0)+(1*8)=56
56 % 10 = 6
So 5032-08-6 is a valid CAS Registry Number.

5032-08-6Relevant articles and documents

Lewis Acid Assisted Electrophilic Fluorine-Catalyzed Pinacol Rearrangement of Hydrobenzoin Substrates: One-Pot Synthesis of (±)-Latifine and (±)-Cherylline

Shi, Hui,Du, Chuan,Zhang, Xinhang,Xie, Fukai,Wang, Xiaoyu,Cui, Shanshan,Peng, Xiaoshi,Cheng, Maosheng,Lin, Bin,Liu, Yongxiang

, p. 1312 - 1319 (2018/02/09)

A microwave-irradiated solvent-free pinacol rearrangement of hydrobenzoin substrates catalyzed by a combination of N-fluorobenzenesulfonimide and FeCl3·6H2O was developed. Its selectivity was first investigated by density functional theory (DFT) calculations. Then the functional group tolerance was examined by synthesizing a series of substrates designed based on the insight provided by the DFT calculations. The application of the methodology was demonstrated by the efficient one-pot synthesis of (±)-latifine and (±)-cherylline, both are 4-aryltetrahydroisoquinoline alkaloids isolated from Amaryllidacecae plants.

A gold catalytic pinacone method of rearrangement of

-

Paragraph 0027; 0028; 0029; 0030; 0031, (2017/11/22)

The invention provides a method used for catalytic rearrangement of pinacol with gold. A reaction general formula is disclosed in the invention, wherein R1, R2, R3, and R4 may be common alkyl, cycloalkyl, and aromatic rings. A gold catalyst needed by reac

On the photodegradation of some 2H-chromene derivatives in fluid solution or in polyurethane matrix

Alberti, Angelo,Campredon, Mylene,Demadrille, Renaud

experimental part, p. 552 - 561 (2011/06/25)

The time profile of the optical density was monitored during the photodegradation of three derivatives of 2,2-diphenyl-2H-naphtho[1,2-b]pyran (1), namely 2,2-bis(4-methoxyphenyl)-5,6-dimethyl-2H-naphtho[1,2-b]pyran (2), 2,2-diphenyl-5-[(ethoxycarbonyl)methoxycarbonyl]-8-methyl-2H-naphtho[1,2-b] pyran (3), and 3,3-bis(4-methoxyphenyl)-6,11-dimethyl-13-hydroxy-13-isopropyl- 3H-indeno[2,1-f ]naphtho[1,2-b]pyran (4) either in toluene solution or in a polyurethane matrix. The photoproducts were identified using HPLC, GC/MS, and direct insertion MS techniques. High molecular weight oxygenated derivatives and new photoproducts deriving from a secondary oxidative pathway were characterized along with expected degradation derivatives. Some of the photoproducts considered responsible for the yellowing of the examined materials were identified. The effect exerted by two additives generally considered to have an inhibiting action toward radical processes was also evaluated.

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