Question

Description acceptable. A highly chemoselective form of this process can occur via a Norrish Type II photo·isomerization in nitro·benzyls such as NVOC. Anisole and p-cresol are used to prevent damaging side reactions after acylium carbocations are produced via a form of this process that uses an SN1 reaction with TFA. It’s not related to quizbowl, but this process occurs when light is shone on PPGs. Performing a type of this process selectively at low pH relies on large steric differences, such as between (*) TIPS and DMIPS. (10[1])This process is the first step of each cycle of the phosphoramidite (10[1])method, in which the formation of a DMT (-5[1])cation yields a bright orange color. Coupling and this process alternate in solid-phase peptide synthesis, (-5[1])which usually uses piperidine to perform this process on (10[1])Fmoc. (10[1]-5[1])For 10 points, name this process exemplified by treating a silyl ether with TBAF or an acid to restore an alcohol group. ■END■ (10[2]0[5])

ANSWER: deprotection [or word forms; accept descriptions of removing a protecting group; prompt on desilylation or detritylation by asking “what general chemical task does that reaction exemplify?”; prompt on removal or cleavage or word forms]
<Adam Fine, Chemistry>
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Summary

2023 Chicago Open08/05/2023Y967%0%33%124.50

Buzzes

PlayerTeamOpponentBuzz PositionValue
Vittal BhatQuasicrystal SilenceThe Plague (anime)" was redirected to: "Oran High School Host Club8510
Eric MukherjeeCurse you, Periplus the Platypus![moderator voice] yes that is so tenpointscore! is your team feeling bonuspilled?9710
Andrew WangThe anti-STOON-dahl cabal (the tall Keyal et al.)wave2: trimming membership codes 9655377758gp105-5
Billy BusseBHSUHang et al., Robert Browning120-5
Mazin OmerDon't be Afraid, the Clown's Afraid TooRomanos IV Diogenes’ Macaroni Grill12910
Vishwa ShanmugamIn Search of Things PastEvans Hall destruction awaiters13010
Shahar SchwartzSaint Peter Andre 3000Teach Us to Outgrow Our Ladness130-5
Jeremy CummingsHang et al., Robert BrowningBHSU15310
John Marvinremembrance of lost timeI prefer really not to speak. If I speak I’m in big trouble1530
Ali HamzehI prefer really not to speak. If I speak I’m in big troubleremembrance of lost time1530
Jerry VinokurovTeach Us to Outgrow Our LadnessSaint Peter Andre 30001530
Chris SimsThe CanadiansTeam Name Think Detail15310
Mike SoriceTeam Name Think DetailThe Canadians1530
Cyrus Zhouwave2: trimming membership codes 9655377758gpThe anti-STOON-dahl cabal (the tall Keyal et al.)1530