Q5. State if the following reactions are cycloadditions, electrocyclic reactions or not a pericyclic reaction. Provide a curved arrow mechanism for each of these reactions. Jang Ć heat heat 2 CO₂Me CO₂Me H 0= MeO₂C H s - B hv E MeO₂C NaOEt, EtOH heat la

DRAW THE FINAL PRODUCT (2C) with the appropriate stereochemistry? Li SO Et LOBPS 1. S 2. HgCl2, HgO H2O, MeOH i-PrOH 2c.

Draw all of the products, both constitutional isomers and stereoisomers, of the following reactions. a) 4,4-dibromo-1-ethylcyclopentene ---->Br2,H2O       b) 3,3-dibromo-1-ethylcyclopentene  ----> HBr c) 3,3-dibromo-1,2-dimethylcyclopentene ---->  1. BH3.  2. H2O2, NaOH

애 85% H3PO4 heat Major Alkene Product Miner Alkeme Product + H₂0

Hw.15.

Both dehydration reactions go through carbocation rearrangements. Does the mechanism in each reaction involve a hydride shift or a methyl shift? O Hold and drag to reorder 1. = Hydride shift = Hydride shift = Methyl shift = Methyl shift H,SO, 1) heat OH OH H,SO, 2) heat 2.