Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5419033 | Journal of Molecular Structure: THEOCHEM | 2006 | 4 Pages |
Abstract
The theoretical studies on the elimination kinetics of 2-substituted ethyl N,N-dimethylcarbamates [(CH3)2NCOOCH2CH2Z, Z=CH2C6H5, C6H5, C(CH3)CH2] in the gas phase were carried out using the ab initio MP2/6-31G and DFT RMPWP91/6-31G(d,p) levels of theory. These carbamates produce N,N-dimethylcarbamic acid and the corresponding substituted olefin in a rate determining step. On the basis of these calculations, the mechanism appears to be concerted, asynchronous, through a six-membered cyclic transition state structure. The acidity of the benzylic and allylic β-hydrogen is believed to be responsible for faster elimination rates.
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Authors
Carlos J. Marcano B, M. Loroño, Tania Córdova, Gabriel Chuchani,