1. In a Diels-Alder reaction, electron-withdrawing groups in the dienophile end up preferentially in the _________ position,...

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Chemistry

1. In a Diels-Alder reaction, electron-withdrawing groups in thedienophile end up preferentially in
the _ position, and the diene must be in the____ conformation.
A) Endo; s-cis C) Exo; s-trans
B) Endo; s-trans D) Exo; s-cis
2.What is the hybridization of the central carbon of allene(1,2-propadiene)? A) sp B) sp2 C) sp3 D) p
3.Which of the following corresponds to the COC bond angle indiethyl ether? A) 60o B) 110o C) 120o D) 180o
4.Which of the following terms best describes the reactivenature of an organolithium reagent?
A) Carbocation B) free radical C) electrophile D) nucleophile E)carbene

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1 In a DielsAlder reaction electronwithdrawing groups in the dienophile end up preferentially in the Endo position and the diene must be in the scis conformation 2 Central Carbon atom has See Answer

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