Devise a synthesis of each alkene using a Wittig reaction to form the double bond. You may use benzene and organic alcoholshaving four or fewer carbons as starting materials and any required reagents.a. CH,CH2CH2CH=CHCH3b. GgH;CH=CHCH2CH¿CH3c. (CHa2C=CHCH(CH)2

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Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(a) What product(s) are formed when the E isomer of C6H5CH = CHC6H5 is treated with Br2, followed by one equivalent of KOH? Label the resulting alkene(s) as E or Z. (b) What product(s) are formed when the Z isomer of C6H5CH = CHC6H5 is subjected to the same reaction sequence? (c) How are the compounds in parts (a) and (b) related to each other?
For alkenes A, B, and C: (a) Rank A, B, and C in order of increasing heat of hydrogenation; (b) rank A, B, and C in order of increasing rate of reaction with H2, Pd-C; (c) draw the products formed when each alkene is treated with ozone, followed by Zn, H2O.
For alkenes A, B, C, and D: (a) Rank A—D in order of increasing heat ofhydrogenation; (b) rank A—D in order of increasing rate of reaction withH2, Pd-C; (c) draw the products formed when each alkene is treated withozone, followed by Zn, H2O.
For alkenes A, B, C, and D: (a) Rank A—D in order of increasing heat of hydrogenation; (b) rank A—D in order of increasing rate of reaction with H2, Pd-C; (c) draw the products formed when each alkene is treated with ozone, followed by Zn, H2O.
What starting materials are needed to prepare each alkene by a Wittig reaction? When there are two possible routes, indicate which route, if any, is preferred.
conjugated ring with alcohol reacts with I2, NaHCO3 with CH2Cl2 and H2O. What will be the product?
(a) What is the major alkene formed when A is dehydrated with H2SO4? (b) What is the major alkene formed when A is treated with POCl3 and pyridine? Explain why the major product is different in these reactions.
a.What product(s) (excluding stereoisomers) are formed when Y is heated with Cl2? b.What product(s) (excluding stereoisomers) are formed when Y is heated with Br2? c.What steps are needed to convert Y to the alkene Z?
What Wittig reagent and carbonyl compound are needed to prepare each alkene? When two routes are possible, indicate which route, if any, is preferred.
Consider a reaction where cis-but-2-ene is treated with OsO4 followed by NaHSO3/H2O. Draw the structure of one product that is formed in the reaction, including correct stereochemistry.
Devise a synthesis of each substituted cyclopropane. Use acetylene (HC=CH) as a starting material in part (a) and cyclohexanone as a starting material in part (b). You may use any other organic compounds and any needed reagents.
In addition to using CHX3 and base to synthesize dihalocarbenes (Section 26.4), dichlorocarbene (:CCl2) can be prepared by heating sodium trichloroacetate. Draw a stepwise mechanism for this reaction.

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Devise a synthesis of each alkene using a Wittig reaction to form the double bond. You may use benzene and organic alcohols having four or fewer carbons as starting materials and any required reagents. a. CH,CH2CH2CH=CHCH3 b. GgH;CH=CHCH2CH¿CH3 c. (CHa2C=CHCH(CH)2