3721-19-5 Usage
Description
5-Chlorobicyclo[2.2.1]hept-2-ene is a bicyclic organic compound with the molecular formula C7H9Cl, featuring a ring of seven carbon atoms and one chlorine atom. This colorless liquid possesses a strong, pungent odor and is utilized as an intermediate in the synthesis of various chemical compounds.
Uses
Used in Pharmaceutical Industry:
5-Chlorobicyclo[2.2.1]hept-2-ene serves as an intermediate in the synthesis of pharmaceuticals, contributing to the development of new medications and therapeutic agents.
Used in Agrochemical Industry:
5-chlorobicyclo[2.2.1]hept-2-ene is also utilized as an intermediate in the production of agrochemicals, playing a role in the creation of pesticides and other agricultural products to enhance crop protection and yield.
Used as a Reagent in Organic Synthesis:
5-Chlorobicyclo[2.2.1]hept-2-ene functions as a reagent in organic synthesis, facilitating various chemical reactions and the formation of different organic compounds for research and industrial applications.
Used as a Solvent in Industrial Processes:
In addition to its roles as an intermediate and reagent, 5-chlorobicyclo[2.2.1]hept-2-ene is employed as a solvent in a range of industrial processes, aiding in the dissolution and interaction of various substances.
It is crucial to handle 5-chlorobicyclo[2.2.1]hept-2-ene with care due to its potential to cause irritation to the skin, eyes, and respiratory system.
Check Digit Verification of cas no
The CAS Registry Mumber 3721-19-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,2 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3721-19:
(6*3)+(5*7)+(4*2)+(3*1)+(2*1)+(1*9)=75
75 % 10 = 5
So 3721-19-5 is a valid CAS Registry Number.
3721-19-5Relevant articles and documents
Endo entry to the nortricyclyl-norbornenyl cation system: Stereochemistry in the fragmentation of endo-5-norbornenyl-2-oxychlorocarbene
Moss, Robert A.,Fu, Xiaolin,Sauers, Ronald R.,Wipf, Peter
, p. 8454 - 8460 (2007/10/03)
Fragmentation of (S)-endo-5-norbornenyl-2-oxychlorocarbene [(S)-8] in cyclohexane-d12 gives ~20% (S)-endo-2-chloro-5-norbornene [(S)-7] with ~50% ee, 65-70% (R)-exo-2-chloro-5-norbornene [(R)-4] with >95% ee, and ~12% (R)-3-nortricyclyl chloride [(R)-5] with ~22% ee. (Analogous stereochemical results were also obtained starting with the enantiomeric carbene (R)-8.) The (S)-8 to (S)-7 and (S)-8 to (R)-4 conversions are ascribed mainly to retention and inversion SNi transition states, respectively. These have been located by computational methods and are nearly isoenergetic. In more polar solvents (CDCl3 and CD3CN), the fragmentation of (S)-8 increasingly occurs via competitive ion pair pathways in which steroselectivity is diminished, and escape to the norbornenyl-nortricyclyl cation directs the products away from endo-2-chloro-5-norbornene toward exo-chloride 4 and nortricyclyl chloride 5.
Unexpected interconnection of the 7-norbornenyl and 3-nortricyclcyl/5- norbornen-2-yl cations
Moss, Robert A.,Fu, Xiaolin
, p. 5321 - 5324 (2007/10/03)
Fragmentation of syn-7-norbornenyloxychlorocarbene provides products derived from both 7-norbornenyl cation-chloride anion pairs and from 3-nortricyclyl/2-norbornen-5-yl cation-chloride anion pairs. A 5,7-hydride shift within the 7-norbornenyl cation is proposed to interconnect the two cation systems.