Homework Answers
Given below are the products formed in each case.
a) This is a cyclopropanation reaction also known as the Simmons-Smith reaction.
b) Hydrobromination under peroxide yields the desired product.
c) Reduction of trans-alkene gives the desired product
d) Bromination is in an anti-fashion with bromonium ion intermediate and then nulceophilic attack of second bromine from other side to yield the product shown below.
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The following four reactions show reactants, reagents, and products. In each reaction one of the categories...
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the...
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the categories is missing (represented by a letter). Supply the missing reactant, reagents or product where appropriate in each reaction. In your structures, be sure to indicate stereochemistry where warranted. A= a) b) H2, 5%Pt/C CH212. Zn(Cu) in ether c) C : CH Br2 in H20 d) D : phase transf. cat OH 1) Hg(OAc)2, H20 2) NaBH4 e)
Draw the structure for the reagents and products for the following reactions. Name the products and...
Draw the structure for the reagents and products for the following reactions. Name the products and indicate the stereochemistry where appropriate. If minor products are formed, show them as well, but be sure to indicate the major product. Hydrogenation of 1,2-dimethyl-1-cyclohexene (H2, Pt).
Provide the missing substrates, products, reagents, in the following reactions. Indicate the stereochemistry where appropriate. 7....
Provide the missing substrates, products, reagents, in the
following reactions. Indicate the stereochemistry where
appropriate.
7. (36 points) Provide the missing substrates /products/reagents in the following reactions. Indicate the stereochemistry where appropriate. a. HgC﹀CH3 (1) 03 Ph︿H (2) (CH3)2S b. H2 OsO4 PhCH2CECCH2CH3 2r3 Lindlar catalyst t-BuoOH C.
(45 pts.) Provide anylall missing products or reactants foe the following reaction equaons All required reagents...
(45 pts.) Provide anylall missing products or reactants foe the following reaction equaons All required reagents or catalysts mustbe included for ful credit. Clearly indicate proper stereochemistry and/oe regiochemistry where appropriate. If more than one isomer is possible all must be shown for full eredit. Mechanisms are not necessary, but my belp as a method of "sbowing work" for partial credit. b. H2S04 +H20 ? +Br Most stable configuration
Unambiguously identify the structures of the major products, reactants, or reagents for the following reactions, including...
Unambiguously identify the structures of the major products, reactants, or reagents for the following reactions, including stereochemistry when appropriate. Indicate if the reactions undergo E1, E2, SN1, or SN2 mechanism. 1. ?? H2SO4, H20o NaOCH3 CH3OH 2. CI ?? H2SO4, H20 3. t-BuOK t-BuOH 4 CI CN 5. CI XcCH.OH 6. CI
4. Fill-in-the-blanks: draw the missing reactants or products involved in the following single or multi-step reactions....
4. Fill-in-the-blanks: draw the missing reactants or products involved in the following single or multi-step reactions. Indicate stereochemistry and draw multiple stereoisomers where applicable. i EtOH EtOH [H2SO4] 1) EtMgBr 2) H20 5. For most ketones, hydrate formation is unfavorable, because the equilibrium favors the ketone rather than the hydrate. However, the equilibrium for hydration of hexafluoroacetone favors the hydrate. Propose a mechanism for this transformation below and provide an explanation for this observation. H2O Но он F3CX CF3 F3C...
give reactants, reagents, and/or products for the following reactions, as appropriate. reactants, reagents, and/or products for...
give reactants, reagents, and/or products for the following
reactions, as appropriate.
reactants, reagents, and/or products for the following reactions, as appropriate SOCI dom OH 1) NaBH, (excess) SOCIE OCH 2) H,O* OH, H2O (excess) 1. CH3CH2MgBr (excess) 2. H30 NaBH4 (excess) Br 1) Mg, ether 2) H30*
Please help. Identify the missing reagents, reactants or major products (A - I) required to complete...
Please help.
Identify the missing reagents, reactants or major products (A - I) required to complete the transformation shown below. Clearly show stereochemistry for all stereo specific reactions.
draw the major products (a - d), suitable reactants (e – i), or list the reagents...
draw the major products (a - d), suitable reactants (e – i), or
list the reagents required (j – o) for the reactions shown below.
Identify the stereochemistry for reactions where stereoselectivity
is observed. Indicate, using a numbered list of reagents, when
multiple sequential reactions are required to generate the desired
product. Don’t worry about solvents but you should indicate the
specific acids and/or bases required for the desired reaction
O 0 Eto I CH3 он * BrsCH NH3+ COOH...
Please Pr 2. Fill in the missing reactants, reagents & conditions, or products. Show stereochemistry where...
Please Pr 2. Fill in the missing reactants, reagents & conditions, or products. Show stereochemistry where appropriate. 10 points. excess MgBr OH Me then H20 Ph3P OMe NH N﹀Me MeO MeO
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the categories is missing (represented by a letter). Supply the missing reactant, reagents or product where appropriate in each reaction. In your structures, be sure to indicate stereochemistry where warranted. A= a) b) H2, 5%Pt/C CH212. Zn(Cu) in ether c) C : CH Br2 in H20 d) D : phase transf. cat OH 1) Hg(OAc)2, H20 2) NaBH4 e)
Provide the missing substrates, products, reagents, in the
following reactions. Indicate the stereochemistry where
appropriate.
7. (36 points) Provide the missing substrates /products/reagents in the following reactions. Indicate the stereochemistry where appropriate. a. HgC﹀CH3 (1) 03 Ph︿H (2) (CH3)2S b. H2 OsO4 PhCH2CECCH2CH3 2r3 Lindlar catalyst t-BuoOH C.
(45 pts.) Provide anylall missing products or reactants foe the following reaction equaons All required reagents or catalysts mustbe included for ful credit. Clearly indicate proper stereochemistry and/oe regiochemistry where appropriate. If more than one isomer is possible all must be shown for full eredit. Mechanisms are not necessary, but my belp as a method of "sbowing work" for partial credit. b. H2S04 +H20 ? +Br Most stable configuration
Unambiguously identify the structures of the major products, reactants, or reagents for the following reactions, including stereochemistry when appropriate. Indicate if the reactions undergo E1, E2, SN1, or SN2 mechanism. 1. ?? H2SO4, H20o NaOCH3 CH3OH 2. CI ?? H2SO4, H20 3. t-BuOK t-BuOH 4 CI CN 5. CI XcCH.OH 6. CI
4. Fill-in-the-blanks: draw the missing reactants or products involved in the following single or multi-step reactions. Indicate stereochemistry and draw multiple stereoisomers where applicable. i EtOH EtOH [H2SO4] 1) EtMgBr 2) H20 5. For most ketones, hydrate formation is unfavorable, because the equilibrium favors the ketone rather than the hydrate. However, the equilibrium for hydration of hexafluoroacetone favors the hydrate. Propose a mechanism for this transformation below and provide an explanation for this observation. H2O Но он F3CX CF3 F3C...
give reactants, reagents, and/or products for the following
reactions, as appropriate.
reactants, reagents, and/or products for the following reactions, as appropriate SOCI dom OH 1) NaBH, (excess) SOCIE OCH 2) H,O* OH, H2O (excess) 1. CH3CH2MgBr (excess) 2. H30 NaBH4 (excess) Br 1) Mg, ether 2) H30*
Please help.
Identify the missing reagents, reactants or major products (A - I) required to complete the transformation shown below. Clearly show stereochemistry for all stereo specific reactions.
draw the major products (a - d), suitable reactants (e – i), or
list the reagents required (j – o) for the reactions shown below.
Identify the stereochemistry for reactions where stereoselectivity
is observed. Indicate, using a numbered list of reagents, when
multiple sequential reactions are required to generate the desired
product. Don’t worry about solvents but you should indicate the
specific acids and/or bases required for the desired reaction
O 0 Eto I CH3 он * BrsCH NH3+ COOH...
Please Pr 2. Fill in the missing reactants, reagents & conditions, or products. Show stereochemistry where appropriate. 10 points. excess MgBr OH Me then H20 Ph3P OMe NH N﹀Me MeO MeO
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