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1572-46-9

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1572-46-9 Usage

General Description

9-Benzylfluorene is a polycyclic aromatic hydrocarbon compound that consists of a fluorene core with a benzyl group attached to it. It is a colorless to light yellow solid with a molecular formula of C21H16 and a molecular weight of 268.35 g/mol. 9-Benzylfluorene is used in the synthesis of organic semiconductors and as a chemical intermediate in the production of various pharmaceuticals and agrochemicals. It is also known to exhibit mutagenic and carcinogenic properties, posing potential health hazards to human and environmental safety. Therefore, it is essential to handle 9-Benzylfluorene with care and follow proper safety measures when working with this chemical.

Check Digit Verification of cas no

The CAS Registry Mumber 1572-46-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,7 and 2 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1572-46:
(6*1)+(5*5)+(4*7)+(3*2)+(2*4)+(1*6)=79
79 % 10 = 9
So 1572-46-9 is a valid CAS Registry Number.
InChI:InChI=1/C20H16/c1-2-8-15(9-3-1)14-20-18-12-6-4-10-16(18)17-11-5-7-13-19(17)20/h1-13,20H,14H2

1572-46-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name 9-benzyl-9H-fluorene

1.2 Other means of identification

Product number -
Other names 9H-Fluorene,9-(phenylmethyl)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1572-46-9 SDS

1572-46-9Relevant articles and documents

Acidity of hydrocarbons. XLIV. Equilibrium ion-pair acidities of 9-alkylfluorenes in cyclohexylamine.

Streitwieser Jr.,Chang,Reuben

, p. 5730 - 5734 (1972)

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THE STOICHIOMETRIC HYDROGENATION OF 9-METHYLIDENEFLUORENE AND RELATED COMPOUNDS WITH HYDRIDOCOBALT TETRACARBONYL

Nalesnik, Theodore E.,Orchin, Milton

, p. 265 - 270 (1980)

9-Methylidenefluorene (IIa) reacts rapidly with HCo(CO)4 at -67 deg C to give a quantitative yield of 9-methylfluorene (IIIa); k2=(13.4 +/- 0.5)*10-2 l mol-1 s-1.Although the internal olefin, 9-ethylidenefluorene (IIb) reacts more slowly than IIa, it is hydrogenated about 2.5 times as fast as the terminal olefin, 1,1-diphenylethylene (I).Measurement of the rate of the reaction of IIb with DCo(CO)4 and comparison with HCo(CO)4 shows a very large inverse isotope effect kH/kD of 0.43.

Alumina-Mediated π-Activation of Alkynes

Akhmetov, Vladimir,Amsharov, Konstantin,Feofanov, Mikhail,Sharapa, Dmitry I.

supporting information, p. 15420 - 15426 (2021/09/30)

The ability to induce powerful atom-economic transformation of alkynes is the key feature of carbophilic π-Lewis acids such as gold- and platinum-based catalysts. The unique catalytic activity of these compounds in electrophilic activations of alkynes is explained through relativistic effects, enabling efficient orbital overlapping with π-systems. For this reason, it is believed that noble metals are indispensable components in the catalysis of such reactions. In this study, we report that thermally activated γ-Al2O3activates enynes, diynes, and arene-ynes in a manner enabling reactions that were typically assigned to the softest π-Lewis acids, while some were known to be triggered exclusively by gold catalysts. We demonstrate the scope of these transformations and suggest a qualitative explanation of this phenomenon based on the Dewar-Chatt-Duncanson model confirmed by density functional theory calculations.

Manganese-Catalyzed Synthesis of Quaternary Peroxides: Application in Catalytic Deperoxidation and Rearrangement Reactions

Chaudhari, Moreshwar B.,Gnanaprakasam, Boopathy,Shaikh, Moseen A.,Ubale, Akash S.

, p. 10488 - 10503 (2020/09/23)

Highly efficient, selective, and direct C-H peroxidation of 9-substituted fluorenes has been achieved using a Mn-2,2′-bipyridine catalyst via radical-radical cross-coupling. Moreover, this method effectively promotes the vicinal bisperoxidation of sterically hindered various substituted arylidene-9H-fluorene/arylideneindolin-2-one derivatives to afford highly substituted bisperoxides with high selectivity over the oxidative cleavage of Ca C bond that usually forms the ketone of an aldehyde. Furthermore, a new approach for the synthesis of (Z)-6-benzylidene-6H-benzo[c]chromene has been achieved via an acid-catalyzed skeletal rearrangement of these peroxides. For the first time, unlike O-O bond cleavage, reductive C-O bond cleavage in peroxides using the Pd catalyst and H2 is described, which enables the reversible reaction to afford exclusively deperoxidized products. A detailed mechanism for peroxidation, molecular rearrangement, and deperoxidation has been proposed with preliminary experimental evidences.

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