d) How many electrons and what conditions are involved in the following concerted reaction? DH A) 4 electrons, an even number of nodes, hv B) 6 electrons, an odd number of nodes, hv C) 6 electrons, an even number of nodes, heat D) 4 electrons, an odd number of nodes, heat f) Which diene below cannot readily undergo Diels Alder chemistry? B. C. h) The following is dimer formed from two trioses. The trioses are HQ OH OH A. D-glyceraldehyde and 1,3-dihydroxyacetone B. L-glyceraldehyde and 1,3-dihydroxyacetone C. D-glyceraldehyde and L-glyceraldehyde D. 1,3-dihydroxyacetone and 1,3-dihydroxyacetone answer

Explain [3,3] Sigmatropic Rearrangements ?

5. When the diene below is dissolved in THF solvent to which a small amount of H₂SO4 has been added, cyclic products are formed that are isomeric with the reactant. Write a mechanism for the formation of ONE of these cyclic isomers, and include its structure. (In other words, you predict the product structure by going through the mechanism.) Include curved arrows in the mechanism to show bonding changes. yand H₂SO4 THF A cyclic isomer of the reactant

Draw the structures of Ferrocene, mono acetylated ferrocene, diacetylated ferrocene and order them from most polar to least polar