96-40-2 Usage
Description
3-Chlorocyclopentene is a chemical compound with the molecular formula C5H7Cl. It is a colorless liquid with a pungent odor and is soluble in organic solvents. It is a halogenated derivative of cyclopentene, which is a five-membered ring hydrocarbon with one double bond. The chlorine atom is attached to the third carbon atom of the cyclopentene ring, making it a chloroalkene.
Uses
Used in Polymer Synthesis:
3-Chlorocyclopentene is used as an initiator in the quasi-living cationic polymerization of isobutene. This process allows for the controlled synthesis of polymers with specific molecular weights and architectures. The cationic polymerization of isobutene is an important industrial process for the production of polyisobutene, which is a versatile polymer with a wide range of applications.
Used in Chemical Synthesis:
3-Chlorocyclopentene can also be used as a building block in the synthesis of various organic compounds. The presence of the double bond and the chlorine atom allows for a variety of chemical reactions, such as addition reactions, substitution reactions, and elimination reactions. This makes it a valuable intermediate in the synthesis of pharmaceuticals, agrochemicals, and other specialty chemicals.
Used in Material Science:
3-Chlorocyclopentene can be used to modify the properties of polymers and other materials. For example, it can be used to introduce functional groups or to create cross-linking between polymer chains. This can lead to improved mechanical properties, thermal stability, or other desirable characteristics in the resulting materials.
Check Digit Verification of cas no
The CAS Registry Mumber 96-40-2 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 96-40:
(4*9)+(3*6)+(2*4)+(1*0)=62
62 % 10 = 2
So 96-40-2 is a valid CAS Registry Number.
InChI:InChI=1/C5H7Cl/c6-5-3-1-2-4-5/h1,3,5H,2,4H2
96-40-2Relevant articles and documents
Phenylselenium Trichloride in Organic Synthesis. Reaction with Unsaturated Compounds. Preparation of Vinylic Chlorides via Selenoxide Elimination
Engman, Lars
, p. 4086 - 4094 (2007/10/02)
Phenylselenium trichloride, PhSeCl3, was reacted with a number olefinic compounds to produce (β-chloroalkyl)phenylselenium dichlorides.The addition was anti stereospecific and irreversible.The presence of an oxygen substituent (acyloxy or aryloxy group) in the allylic position of the olefin directed the attack of PhSeCl3 to occur regiospecifically anti-Markovnikov to give a (β-acyloxy/aryloxy-β'-chloroalkyl)phenylselenium dichloride.When the (β-chloroalkyl)phenylselenium dichlorides were treated in methylene chloride with aqueous sodium hydrogen carbonate, the selenium dichloride moiety was readily hydrolyzed to a selenoxide, which underwent the usual selenoxide elimination reaction to produce an allylic or a vinylic chloride.Symmetrical olefins containing no allylic hydrogens were converted to vinylic chlorides with retention of olefin geometry.Olefins containing a directing oxygen substituent in the allylic position afforded vinylic chlorides where the vinylic halogen atom was oriented 1,3 to the oxygen substituent (E/Z mixture).Other olefins afforded mixtures of allylic and vinylic halides in varying proportions.The reaction of phenyselenium tribromide, PhSeBr3, with some olefinic compounds was also investigated.This material showed the same stereo- and regiochemical behavior as PhSeCl3 in its addition reactions.However, the adducts were not useful for the preparation of vinylic or allylic bromides by using the hydrolytic selenoxide elimination reaction.
