elimination - 2023 ARCADIA

Question

Beta-agostic interactions can promote one type of these reactions in catalytic hydrogenation reactions. Xanthate pyrolysis is practically irreversible thanks to the formation of stable carbonyl sulfide and thiol byproducts in a reaction of this type. Amines can be removed through exhaustive methylation followed by treatment with silver oxide in a reaction of this type named for (*) Hofmann. For bimolecular (-5[1])reactions of this type, an anti-periplanar arrangement of atoms is required. (10[1])The unimolecular form of this reaction has the same intermediates as SN1 reactions, so its products compete with substitution products. (10[1])For 10 points, name these reactions that can form pi bonds through E2 or E1 mechanisms. (10[1])■END■ (10[1])

ANSWER: elimination [accept beta-hydride elimination or reductive elimination or Chugaev elimination; accept E2 until read; accept E1 until read]

<JZ, Chemistry>

= Average correct buzz position

Buzzes

Player	Team	Opponent	Buzz Position	Value
Jaime Salamanca Camacho	Imperial B	Imperial A	58	-5
Ben LaFond	Cambridge B	Cambridge A	69	10
Ben Russell Jones	Edinburgh	Durham	89	10
Faiz Ahmed	Birmingham	Bristol	105	10
Justin Lee	Imperial A	Imperial B	106	10

Summary


2023 ARCADIA at Duke	Emory, Duke, Yale	N	2	50%	0%	50%	56.00
2023 ARCADIA at Emory	Emory, Duke, Yale	N	3	67%	0%	33%	109.00
2023 ARCADIA at Imperial	Imperial	Y	4	100%	0%	25%	92.25
2023 ARCADIA Online	Maryland, Online	N	3	67%	0%	0%	58.50
2023 ARCADIA at Ohio State	Ohio State, Texas	N	3	33%	0%	67%	79.00
2023 ARCADIA at Texas	Ohio State, Texas	N	3	100%	0%	0%	58.67
2023 ARCADIA at WUSTL	Premiere	N	3	67%	0%	67%	84.00
2023 ARCADIA at UC Berkeley	Premiere	N	2	100%	100%	0%	37.00
2023 ARCADIA at Carleton University	Premiere	N	3	100%	0%	0%	77.00
2023 ARCADIA at Claremont Colleges	Premiere	N	1	100%	0%	0%	62.00
2023 ARCADIA at Indiana	Premiere	N	5	80%	20%	40%	66.50
2023 ARCADIA at RIT	Premiere	N	2	50%	50%	50%	37.00