the cis isomer elimination is faster than trans isomer
in the stable conformation of cis isomer both H and Br are anti to each other. so anti periplanar transition state possible for fast elimination . so elomination is faster then tran isomer.
where as in the stable conformer of trans isomer H and Br are not anti to each other. It must get unstable and high energy conformer to get elimination. so elimination is slwer than cis isomer
cis-1-bromo-4-tert-butylcyclohexane and trans-1-bromo-4-tert-butylcyclohexane both react with sodium ethoxide in ethanol to give 4-tert-butylcyclohexene. However, one of...
11/8/19 The cis- and trans-isomers of 1-bromo-2-methylcyclohexane are shown below. One of these isomers undergoes E2 elimination 50 time faster than the other. Illustrate the E2 mechanism using the chair conformers to explain why one isomer is much faster and give the major product of each reaction. 1-BUOK 1-BOK Illustrate the Sw2 mechanism for the reaction below and show what has happened to the stereochemistry of the compound. NaCN acetone
What alkene is formed when 1-bromo-4-methylcyclohexane reacts with sodium ethoxide as the base, in ethanol solvent. (elimination) Is the alkene chiral or achiral? Are there any stereoisomers of this alkene?
1. In both the sodium iodide test and the silver nitrate test, why does 2-bromobutane react faster than 2-chlorobutane? Bromine is a better leaving group since it is a weaker base than chlorine is. 2. a. Why does benzyl chloride react under both SN1 and SN2 conditions? Benzyl chloride is a primary alkyl halide, hence reactive under SN2 conditions. The primary carbocation formed due to the departure of Cl- is stabilized by the pi electrons in the benzene ring. b. Why is...