1742-14-9 Usage
General Description
1,1-Bis(3,4-dimethylphenyl)ethane, also known as chiral ligand 3 or DIOP, is a chemical compound with the molecular formula C22H26. It is a colorless to pale yellow liquid at room temperature and is commonly used as a ligand in organometallic chemistry and asymmetric catalysis. It is a chiral compound with two optically active carbon atoms, making it an important building block for the synthesis of chiral drugs and molecules. 1,1-Bis(3,4-dimethylphenyl)ethane has been widely studied for its applications in the pharmaceutical and agrochemical industries, and its complex structure makes it a valuable tool in the development of new chemical processes and synthetic methodologies.
Check Digit Verification of cas no
The CAS Registry Mumber 1742-14-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,4 and 2 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1742-14:
(6*1)+(5*7)+(4*4)+(3*2)+(2*1)+(1*4)=69
69 % 10 = 9
So 1742-14-9 is a valid CAS Registry Number.
InChI:InChI=1/C18H22/c1-12-6-8-17(10-14(12)3)16(5)18-9-7-13(2)15(4)11-18/h6-11,16H,1-5H3
1742-14-9Relevant articles and documents
Structural requirements for decarbonylative α,α-diarylation reaction of 2-methoxyalkanoic acids in phosphorus pentoxide-methanesulfonic acid mixture yielding 1,1-diarylalkane homologs
Yonezawa, Noriyuki,Hino, Tetsuo,Tokita, Yoshimi,Matsuda, Kazuhisa,Ikeda, Tomiki
, p. 14287 - 14296 (2007/10/03)
2-Methoxyalkanoic acids were found to undergo consecutive decarbonylative α,α-diarylation in P2O5-MsOH instead of Friedel-Crafts type arylation on the carbonyl carbon. The influence of the substituents of the arenes and the carboxylic acids in this reaction was elucidated based on the reaction yields. The reaction behavior was found to be primarily governed by the electron-withdrawing/releasing property of the α-substituents on the carboxylic acids as well as the positive species-accepting ability of the arenes. The steric hindrance was shown to participate in determining the reaction feasibility as a secondary factor.
