Which Diels Alder reaction will go best (fastest, best yield, lowest temperature)? CH₂ CH2 CH2 CH2 + CH2 CH3 CH3 + CH3 CH2 + C N N FCH2 bottom reaction middle reaction top reaction Consider this reaction which we have never studied: H CH.3 Ph₂CLi CH3 CH3 H T= 78°C 10% T = +25°C 90% A 90% 10% B When the reaction was run at -78°, the products were 10% first compound (A), 90% second compound (B). When the reaction was run at 25°, the products were 90 % first compound (A), 10% second compound (B). What can we say about A? A is the kinetic product and is formed fastest. A is the thermodynamic product and is most stable. OA is the thermodynamic product and is formed fastest. A is the kinetic product and is most stable.

Name the structure. Which product is formed after the addition of Jones Reagent to compound B. (Compound B is the structure on the image)

Choose the reaction that involves a carbocation intermediate: Br REACTION A: NH2 CI REACTION B: OH CI Br2 REACTION C: FeBr3 Br REACTION D: OH

Examine the curved arrow mechanism below, and answer the question in the box. If the mechanism is reasonable, draw all products. If the mechanism is not reasonable leave the drawing space blank. Is the curved arrow mechanism reasonable? O yes O no Click and drag to start drawing a structure. ?圖 图 ola Ar