71242-68-7 Usage
Uses
Used in Chemical Synthesis:
2,4-Cyclopentadiene-1-carboxylic acid, 1,3-dimethyl-, methyl ester (9CI) is used as a building block in the chemical synthesis industry for the creation of other organic compounds. Its unique structure and reactivity make it a valuable intermediate in the production of various chemical products.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, 2,4-Cyclopentadiene-1-carboxylic acid, 1,3-dimethyl-, methyl ester (9CI) may be employed as a precursor in the development of new drugs or as a component in the synthesis of existing medications. Its versatility in chemical reactions allows for the exploration of its potential applications in medicinal chemistry.
Used in Research and Development:
2,4-Cyclopentadiene-1-carboxylic acid, 1,3-dimethyl-, methyl ester (9CI) is utilized in research and development settings to study its properties, reactivity, and potential applications in various fields. Scientists and researchers may investigate its behavior in different chemical reactions and explore its use in innovative processes or products.
Check Digit Verification of cas no
The CAS Registry Mumber 71242-68-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,2,4 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71242-68:
(7*7)+(6*1)+(5*2)+(4*4)+(3*2)+(2*6)+(1*8)=107
107 % 10 = 7
So 71242-68-7 is a valid CAS Registry Number.
71242-68-7Relevant academic research and scientific papers
Synthesis and Rearrangement of Substituted Bicyclopent-2-enes. A Thermal "Walk"-Rearrangement
Klaerner, Frank-Gerrit,Adamsky, Friedhelm
, p. 299 - 322 (2007/10/02)
The synthesis and the thermal behaviour of methyl 5-methyl-, 1,5-, and 2,5-dimethylbicyclopent-2-ene-5-carboxylates 3a,b, 4a,b, 5a,b, as well as of 1,5- and 2,5-dimethylbicyclopent-2-ene-5-carbonitriles 6a, 7a,b are reported.The "walk"-rearrangement which is degenerate in the cases of 3a,b could be detected experimentally with the aid of the dimethyl derivatives 4a,b, 5a,b, 6a, and 7a,b.Electrocyclic ring opening to the correspondingly substituted 1,3-cyclopentadienes competes with the "walk"-rearrangements.Already at 0 deg C the "walk"-rearrangements 4a -> 5a, 4b -> 5b, and 6a -> 7a proceed stereospecifically with inversion at the migrating carbon atom C-5 as postulated by Woodward and Hoffmann (0 deg C: ΔG*= 21.7, 24.8, and 21.9 kcal/mol).We assume that the surprisingly low activation barriers do not only result from the resonance stabilization of an aromatic transition state but largely from the anomalously high ground-state enthalpy of the bicyclopentene system.
