Which of the following electrophile is useful for nucleophilic addition reacti ofit оо ІІ . -CH₃
Question 15 The reaction shown is classified as: CH, OH (A) a nucleophilic addition (B) a nucleophilic substitution (C) an electrophilic substitution (D) an electrophilic addition CH, Но CHCN
3) Gilman reagents are a type of organocuprate which are able to provide nucleophilic carbons for a 1,4 conjugated addition on a,B-unsaturated carbonyls (see below). Following the addition, an acidic workup protonates the anionic intermediate to yield the product shown. a. Draw the mechanism that occurs between the anionic carbon nucleophile and the cyclic ketone electrophile. The mechanism should use 3 arrows. Show the intermediate following the addition in the box below. Indicate charges Explain why the nucleophilic carbon attacks...
which compound is the most reactive for nucleophilic
addition??
vs vs H most reactive which for compound Nucleophilic is the addition ?
Which of the following compounds will not react via the nucleophilic aromatic substitution addition elimination mechanism A o-bromonitrobenzene B1-bromo-4-nitrobenzene C1-chloro-2,4-dinitrobenzene D. p-bromonitrobenzene Em-bromonitrobenzene
A.) Functioning as nucleophile, which
attacks the electrophilic carbonyl center of substrate
B.) Functioning as electrophile, which attacks the nucleophilic
carbonyl center of substrate
C.) Functioning as an acid
D.) Functioning as a base
The image is an example of:
A.) covalent catalysis
B.) acid-base catalysis
C.) metal-ion catalysis
D.) hydration catalysis
What is the function of cysteine residue in the active site of the following enzyme catalyzed reaction? CHZOPO NAD+ HCOH NADH CH OPC НСОН Ho Cys
Question 28 Which of the following compounds is most reactive towards a nucleophilic addition reaction? o e H Н H 1 11 IV II III IV V FO F10 FB F7 F6 F5 F4 F2 F3 * A & @ $ % 5 7 LO 8 3 4 N
which of the following best justifies your choice of carbon
electrophile?
drives → XCO Question 40 Which of the following best justifies your choice of carbon electrophile? A.HBr BH H CH Li D. H CH₃ HH HH HH HH Choose ALL that apply. Resonance Sterics Inductive effects Class of carbon Previous No new data to save. L
2. Which of the following compounds is most basic and why? ОН ОН NH2 NH2 ІІ ІІІ IV
Put the following molecules in order towards nucleophilic
addition (1 = most reactive). Explain your order.
8) Put the following molecules in order towards nucleophilic addition (1 = most reactive). Explain your order. Acetone Tert-butylmethyl ketone Perfluroacetone Formaldehyde
please help!! thank you!
Which of the following compounds is most reactive towards nucleophilic addition reaction? H1 H H A B С D E Predict the product for the following reaction sequence. iii PBrz Mg/ether Н H Cr04 ОН 2. Hz0+ A. 6,7-dimethyl-3-nonanol B. 6,7-dimethyl-3-nonanone C. 6,7-dimethyl-3-nonanal D. 3,4-dimethyl-7-nonanol E. 3,4-dimethyl-7-nonanone Predict the product for the following reaction 1. LiAlH4 (excess) 2. H30* OH OH OH -Н HO B с D Provide the structure of the ylide needed to prepare...