25022-99-5 Usage
Description
9-chloro-9-phenyl-9H-fluorene, also known as 9-chloro-9-phenyl-9H-dibenzofuran, is a chemical compound with the molecular formula C19H11Cl. It is a polycyclic aromatic hydrocarbon that consists of a fluorene core with a chlorine atom and a phenyl group attached to it. 9-chloro-9-phenyl-9H-fluorene is recognized for its role in organic synthesis and its potential applications in various industries.
Uses
Used in Organic Synthesis:
9-chloro-9-phenyl-9H-fluorene is used as a building block in the production of various materials, pharmaceuticals, dyes, and other organic compounds. Its unique structure allows it to be a versatile component in the creation of complex organic molecules, contributing to the development of new products and technologies.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, 9-chloro-9-phenyl-9H-fluorene is used as a key intermediate in the synthesis of certain drugs. Its presence in the molecular structure can influence the pharmacological properties of the final product, making it an important component in drug development.
Used in Dye Industry:
9-chloro-9-phenyl-9H-fluorene is utilized as a precursor in the production of dyes. Its chemical properties contribute to the color and stability of the dyes, which are then used in various applications such as textiles, plastics, and printing inks.
Used in Environmental Safety:
Due to its hazardous nature, 9-chloro-9-phenyl-9H-fluorene is also used in the development of safety protocols and regulations for its storage and disposal. This ensures that the potential harm to the environment and human health is minimized.
It is important to handle 9-chloro-9-phenyl-9H-fluorene with care due to its toxic properties and potential to cause skin and eye irritation. Proper safety measures should be taken during its use to prevent any adverse effects.
Check Digit Verification of cas no
The CAS Registry Mumber 25022-99-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,0,2 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25022-99:
(7*2)+(6*5)+(5*0)+(4*2)+(3*2)+(2*9)+(1*9)=85
85 % 10 = 5
So 25022-99-5 is a valid CAS Registry Number.
25022-99-5Relevant articles and documents
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Williamson,Anderson,Watt
, (1944)
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The Reaction between Acyl Halides and Alcohols: Alkyl Halide vs. Ester Formation
Strazzolini, Paolo,Giumanini, Angelo G.,Verardo, Giancarlo
, p. 217 - 254 (2007/10/02)
In the reaction between an acyl halide and an alcohol the thermodynamically favoured products are the free carboxylic acid and the alkyl halide.The initial reaction is, generally, the formation of an ester and HHal.When the alcohol is very prone to yield an alkyl cation upon protonation by HHal, formed H2O exhibited a superior reactivity and competed successfully with the alcohol for the acyl halide making, therefore, ester formation practically confined to a triggering role.But, in those cases where the cation is less easily formed, ester formation was favoured and, consequently, became the necessary elementary step towards alkyl halide formation.Tis final product, on the other hand, might be extremely slow to form in an SN2 reaction between the protonated ester function and the halide ion.In these instances, therefore, as well as in the cases when a basic solvent competes for the proton of HHal, the ester is the final product.A notable exception of the situation above outlined, is given by α-hydroxy-α-phenylbenzeneacetic acid (2y), which appears to undergo direct chlorine-hydroxyl interchange through a quaternary intermediate (E), in the end collapsing to α-chloro-α-phenyl-benzeneacetic acid (4y).Different systems were compared using CH2Cl2 as a solvent under strictly similar conditions.Some 28 different substrates were tested for reaction with AcCl (1a), whereas the action of eight acyl halides (a) against (RS)-α-methylbenzenemethanol (2n) and α-phenylbenzenemethanol (2p), as well as the effect of five different solvents on the reaction between two alcohols (2p and 2-methyl-2-propanol, 2c) with 1a, were observed.
