Question

Mechanisms for this type of reaction are discerned by the parameter m in the Grunwald–Winstein equation. It’s not alkylation, but the presence of sulfur in mustard gas increases the rate of one of these reactions in a classic example of anchimeric (“an-kye-MER-ic”) assistance. Carbocation (“carbo-CAT-eye-on”) intermediates act as Lewis acids in one of these reactions. In one type of this reaction, inversion of configuration (10[1])occurs due to a (10[1])“backside attack.” (10[3])A pentavalent transition state occurs in one type of this reaction (10[1])whose name indicates that it is bimolecular. High temperatures or bulky bases cause eliminations to be favored over these reactions. (10[2])For 10 points, the nucleophilic SN1 and SN2 mechanisms exemplify what type of reaction, (-5[1])in which one group of a compound is exchanged for another? (10[2])■END■

ANSWER: substitution reactions [or nucleophilic substitution; accept SN1 or SN2; prompt on solvolysis by asking “what type of reaction does that predominantly follow?”]
<Chemistry>
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Buzzes

PlayerTeamOpponentBuzz PositionValue
Oscar DespardCambridge ACambridge B6110
Delia CropperOxford ACambridge C6510
Justin LeeImperial ABristol A6710
Alessandro d'AttanasioCambridge DBirmingham6710
Gus ReddingImperial BSouthampton B6710
Adsayan GaneshWarwick AOxford B7810
Nathan EasowManchesterLSE A9810
Amelia ReesDurham BVanderbilt9810
Danny FisherWarwick BBristol B112-5
Jacob TaylorBristol BWarwick B12310
Leo TaussigLSE BEdinburgh12310