Identify the cumulated diene. 4-methyl-1,3-heptadiene 3-methyl-1,5-heptadiene 2-methyl-2,4-heptadiene 4-methyl-1,4-heptadiene 5-methyl-2,3-heptadiene Which diene and dienophile would react to give the following Diels-Alder product? II E IV + COH 0- COH COH COH COH II IV 0=0 COH COH COH Predict the product for the following Cope rearrangement. A 01 11 III IV IV II Which diene and dienophile would react to give the following Diels-Alder product? 4 01 11 III IV V IV ( II V III Which of the following best describes the stereochemistry of ring closure and the product for the following reaction? hv disrotatory, cis-3,4-diethylcyclobutene conrotatory, cis-3,4-diethylcyclobutene disrotatory, trans-3,4-diethylcyclobutene conrotatory, trans-3,4-diethylcyclobutene Testuanny Identify the pericyclic reaction in which two sigma bonds are formed and two pi bonds are broken. sigmatropic rearrangement cycloaddition reaction electrolytic reaction this is not a pericyclic reaction Question Attempts: 0 of 2 used SAVE FOR LATER SUBMI Predict the product for the following Diels-Alder reaction. LOCH 3 01 = 2 II OCH None of these OCH3 ||| OCH IV COCH, Provide the structure for (1E,3Z)-1-methoxy-2-methyl-1,3-pentadiene. HCO 111 IV V I HCO IV OCH S 11 HCO HCO III Which one of the following dienes is least stable? 1 11 111 IV II III IV Which of the following best describes the stereochemistry of ring closure and the product for the following reaction? (3E,SZ,7E)-3,5,7-decatriene A disrotatory, cis-5,6-diethyl-1,3-cyclohexadiene conrotatory, cis-5,6-diethyl-1,3-cyclohexadiene disrotatory, trans-5,6-diethyl-1,3-cyclohexadiene: conrotatory, trans-5,6-diethyl-1,3-cyclohexadiene.