The 2 + 2 cycloaddition of two molecules of (2E)-2-butenedinitrile leads to what product? Describe this process using a reaction scheme and curved arrows, show the product including the stereochemistry of the product.
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- Compound A, C₂H16 reacts with 1 molar equivalent(s) of hydrogen on catalytic hydrogenation. A undergoes reaction with ozone, followed by Zn treatment, to give: O CH3 O || CH3CCH₂CCH₂CCH3 CH3 Compound A Propose a structure for A. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one.An alkene having the molecular formula C11H20 is treated sequentially with ozone (O3) and zinc/acetic acid to give the product/s shown. CH;CH2ČCH,CH3 Draw a structural formula for the alkene. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. C opy aste ChemDoodleWhen the alkene A was treated first with Hg(OAc)2 in MeOH and second with NaBH4 the product was the ether B. Using curved arrows please give the mechanism for the first step of (Hg(OAc)2 in MeOH) this reaction, including any regioselectivity or stereoselectivity. H3C 1. Hg(OAc)2, MeOH H3C O-CH3 =CH2 ✓ -CH3 H3C 2. NaBH H3C A B
- An alkene having the molecular formula C,H12 is treated sequentially with ozone (O3) and zinc/acetic acid to give the product/s shown. CH3CH2CH,CH½CH2CH Draw a structural formula for the alkene. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. P opy aste Previous NextConsider the reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide. (a) Draw the organic product and clearly indicate stereochemistry by showing the hydrogen on the chirality centers and using wedge and dash bonds. (b) Then analyze the stereochemistry of the product. -SH C NaOH Draw only the organic product. Select /// Draw Rings More C H S Erase:Addition of HBr to allene (CH2=C=CH2) forms 2-bromoprop-1-ene ratherthan 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed froman allylic carbocation. Considering the arrangement of orbitals in theallene reactant, explain this result.
- Bicyclo-2,5-heptadiene can be prepared in two steps from cyclopentadiene and vinyl chloride. Provide a mechanism for each step.Addition of HBr to allene (CH2 = C = CH2) forms 2-bromoprop-1-ene rather than 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed from an allylic carbocation. Considering the arrangement of orbitals in the allene reactant, explain this result.Reaction of HBr with 3-methylcyclohexene yields a mixture of four products: cis-and trans-1-bromo-3-methylcyclohexane and cis-and trans-1-bromo-2-methylcyclohexane. The analogous reaction of HBr with 3-bromocyclohexene yields trans-1, 2-dibromocyclohexane as the soleproduct. Draw structures of the possible intermediates, and then explain why only a single product is formed in this reaction.
- Compound A has molecular formula C4H10, and gives two monochlorides, B and C, on photochemical chlorination. Treatment of either of these monochlorides with potassium tert-butoxide gives the same alkene (C4H8) as the product, but B leads to just one isomer of the alkene, D, where C gives D and another isomer of the alkene, E. Treatment of monochlorides B and C with aqueous ethanol gives products F and G, respectively, both of which are of molecular formula C4H10O. What are the names of compounds A-G?An alkene having the molecular formula C5H10 is treated sequentially with ozone (O3) and zinc/acetic acid to give the product/s shown. H3C O CH3CHCH + H. Draw a structural formula for the alkene. You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. P opy aste [* Previous NextExplain the observation with hydroxylation of cis-2-butene with OsO4 yields a different product than hydroxylation of trans-2-butene. First draw the structure and show the stereo chemistry each product and then molecular models.