1-Chloro-1,2-diphenylethane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw Newman projections of the reactive conformations leading to both possible products, and suggest a rea- son why the trans alkene is the major product. 1) C: "OCH3 -CHCH2 -CH=CH- 1-Chloro-1,2-diphenylethane trans-1,2-Diphenylethylene 2) Predict the major alkene product of the following E1 reaction: HOAC CH3CHCBr CHĄCH3 Нeat

1-Chloro-1,2-diphenylethane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw Newman projections of the reactive conformations leading to both possible products, and suggest a rea- son why the trans alkene is the major product. 1) C: "OCH3 -CHCH2 -CH=CH- 1-Chloro-1,2-diphenylethane trans-1,2-Diphenylethylene 2) Predict the major alkene product of the following E1 reaction: HOAC CH3CHCBr CHĄCH3 Нeat

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 46CTQ

See similar textbooks

Similar questions

1-Chloro-1,2-diphenylethane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw Newman projections of the reactive conformations leading to both possible products, and suggest a reason why the trans alkene is the major product.
Based on the more stable conformation (conformation A), need help providing two mechanisms for the E2 elimination of the protonated version of cis-1 using a general base (B:) to give alkenes 2 and 3. Clearly show which hydrogens meet the stereochemical requirements for E2-elimination Using Zaitsev’s rule, indicate which is favoured. Pictured is also a reaction mechanism to show what the alkenes 2 and 3 are. Thank you :)
OChem HELP... Draw the conformational structures (chair or boat conformations) for the MAJOR product formed when 1-tert-butylcyclohexene reacts with each of the following reagents. Also, indicate if the product obtained is racemic form. a) Br2, CCl4 b) Br2, H2O c) OsO4, then aqueous NaHSO3 d) ICl e) mCPBA, then H3O+, H20 f) O3, then Me2S (conformational structure not required) g) BH3:THF, then H2O2, HO- h) D2, Pt i) Hg(OAc)2 in THF-H2O, then NaBH4, HO- j) BD3 :THF, then CH3CO2T
Provide the E2 mechanism for β-elimination reactionemploying 2-chloro-2-methylbutane to prepare 2-methyl-2-butene and 2-methyl-1-butene reaction. Use the actual structures of thereactants and products. Explain which of the alkenes is the major product ofthis reaction ?
(a) When (Z)-3-methylhex-3-ene undergoes hydroboration–oxidation, two isomericproducts are formed. Give their structures, and label each asymmetric carbon atomas (R) or (S). What is the relationship between these isomers?(b) Repeat part (a) for (E)-3-methylhex-3-ene. What is the relationship between the productsformed from (Z)-3-methylhex-3-ene and those formed from (E)-3-methylhex-3-ene?
Stretch the structure for (S)-3-bromo-2-methylpentane and add the stereochemistry at all stereogenic centers.
Given the final product and reagents for each step in the forward synthesis of this cyclohexane-containing internal alkyne, please propose the structures for the synthetic intermediates A-E below.
I have a trans-3-chloro-1-methylcyclopentane. I react it with ethanol with heat. Knowing heat favors elimination, I suspect 3-methyl-cyclopentene as a product. Will I also get the substitution product 3-methoxy-1-methylcyclopentane, a pair of enantiomers and a pair of diastereomers?
Draw the structure consistent with following description. (3E,5Z)-nona-3,5-diene in the s-cis conformation
Alcohols can be converted to alkyl chlorides using SOCl2 with complete inversion of stereochemistry. Using curved arrows draw the stepwise mechanism for chlorination of an alcohol. Be sure to include lone pairs necessary to the mechanism steps and any non-zero formal charges.
Dehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.
Show how to convert cyclopentene into cis-1,2-Cyclopentanediolcompound