24700-20-7 Usage
Description
p-Tolyl 3-methylcrotonate is an organic compound that belongs to the group of esters. It is composed of a tolyl group (methylbenzene) and a 3-methylcrotonate group. The tolyl group is a phenyl ring with a methyl group attached to it, while the 3-methylcrotonate group consists of a crotonate structure with a methyl substituent on the third carbon atom. Its chemical properties make it a versatile and important building block for the synthesis of various organic compounds.
Uses
Used in Organic Synthesis:
p-Tolyl 3-methylcrotonate is used as a reagent in organic synthesis for various reactions. Its unique structure and chemical properties make it a valuable building block for the synthesis of a wide range of organic compounds.
Used in Pharmaceutical Industry:
p-Tolyl 3-methylcrotonate is used as an intermediate in the production of pharmaceuticals. Its versatility and reactivity in organic synthesis make it a valuable component in the synthesis of various drug molecules.
Used in Fragrance Industry:
p-Tolyl 3-methylcrotonate is used as a raw material in the production of fragrances. Its unique chemical structure contributes to the creation of distinct and complex scents, making it an important component in the fragrance industry.
Used in Fine Chemicals Industry:
p-Tolyl 3-methylcrotonate is used in the production of other fine chemicals. Its applications in this industry are diverse, ranging from the synthesis of specialty chemicals to the development of advanced materials.
Check Digit Verification of cas no
The CAS Registry Mumber 24700-20-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,7,0 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 24700-20:
(7*2)+(6*4)+(5*7)+(4*0)+(3*0)+(2*2)+(1*0)=77
77 % 10 = 7
So 24700-20-7 is a valid CAS Registry Number.
InChI:InChI=1/C12H14O2/c1-9(2)8-12(13)14-11-6-4-10(3)5-7-11/h4-8H,1-3H3
24700-20-7Relevant articles and documents
Bismuth(III) triflate catalyzed tandem esterification–Fries–oxa-Michael route to 4-chromanones
Meraz, Kevin,Gnanasekaran, Krishna Kumar,Thing, Rup,Bunce, Richard A.
supporting information, p. 5057 - 5061 (2016/11/02)
An efficient tandem reaction approach is described to prepare 4-chromanones from electron-rich phenols and 3,3-dimethylacrylic acid or trans-crotonic acid in boiling toluene using 20?mol?% bismuth(III) triflate as the catalyst. The reaction is also successful from the corresponding aryl esters of each of these acids under the same conditions. The procedure is convenient to perform, and 25–90% yields of products are realized following chromatography. A range of substrates is included (14 substrates for each acid) to help define the scope of the process. Additional experiments are reported, which confirm that the sequence of events involves (1) esterification, (2) Fries rearrangement and (3) oxa-Michael ring closure.
ON THE REACTION OF SUBSTITUTED PHENOLS AND 3-METHYLBUT-2-ENOIC ACID. A COMPARATIVE STUDY
Seboek, Peter,Jekoe, Jozsef,Timar, Tibor,Jaszberenyi, Joseph Cs.
, p. 2099 - 2114 (2007/10/02)
A systematic and comparative study of the reaction of a series of substituted phenols and 3-methylbut-2-enoic acid in zinc chloride/phosphorus oxychloride and aluminum chloride/phosphorus oxychloride reveals that the formation of phenolic esters and 2,2-dimethyl-4-chromanones is strongly influenced by the substituents, their popsition on the aromatic ring of the starting phenols.Based on our study, a mixed Friedel-Crafts and Fries rearrangement mechanism is in operation in these reactions.
