4040-29-3 Usage
General Description
1,1'-Biphenyl, 4-ethenyl-4'-methyl- is a chemical compound that belongs to the class of biphenyl derivatives. It consists of two benzene rings linked by a single carbon-carbon bond. The compound is characterized by the presence of an ethenyl group at the 4th position on one benzene ring and a methyl group at the 4th position on the other benzene ring. It is commonly used in industrial processes and chemical synthesis, and it may have applications in the production of various organic compounds. The chemical properties and potential uses of 1,1'-Biphenyl, 4-ethenyl-4'-methyl- make it of interest to researchers and industries involved in the development of new materials and products.
Check Digit Verification of cas no
The CAS Registry Mumber 4040-29-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,4 and 0 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4040-29:
(6*4)+(5*0)+(4*4)+(3*0)+(2*2)+(1*9)=53
53 % 10 = 3
So 4040-29-3 is a valid CAS Registry Number.
4040-29-3Relevant articles and documents
Preperations and Reactions of Symmetrical Dimethylenebiphenyl Dianions; Conformations of -o-Cyclophanes. A Simple NMR method for Determining Twist Angles in Biphenyls
Bates, Robert B.,Camou, Fernando A.,Kane, Vinayak V.,Mishra, Prasana K.,Suvannachut, Kessara,White, James J.
, p. 311 - 317 (2007/10/02)
With n-butyllithium / potassium tert-butoxide, a proton is removed from each methyl group of the symmetrical dimethylbiphenyls to give dianions in good yield.The reactions of these dianions with alkyl halides, dialkyl sulfates, trimethylchlorosilane, trimethylchlorogermane, α,ω-dihalides, and oxidizing agents were found to provide the best routes to many symmetrically substituted biphenyls, including - and cyclophanes.NMR and molecular mechanical studies of some of these cyclophanes gave information on their preferred conformations.An NMR method for determining the angle of twist in biphenyls from the chemical shifts of the ortho hydrogens is developed.
