Which of the following mechanistic steps of allylic bromination does the following represent? Br H Initiation...
Which of the following represent the products of the disproportionation event? ferrarien A D C ОА Ос OD OB None. Disproportionation is a propagation event. None. Disproportionation is an initiation event.
Predict the major product of the following reaction, and draw complete mechanisms for the initiation and propagation steps. Propose 2 termination steps. Label each elementary step. Br2 hv Initiation: Propagation:
Predict the major product of the following reaction, and draw complete mechanisms for the initiation and propagation steps. Propose 2 termination steps. Label each elementary step. Br2 hv Initiation: Propagation:
Which step of the chain process does the following reaction represent? a) initiation b) propagation c) termination d) substitution
Consider the following reaction mechanism: 1) Initiation Br2 → 2 Br• 2) Propagation (here a cycle of two steps) Br• + H2 → HBr + H• H• + Br2 → HBr + Br• 3) Termination 2 Br• → Br2 This reaction is catalyzed by platinum. Wat causes the bromine to split in the initiation step? Does the platinum influences this or is it just due the weak bonding between Br-Br?
Consider the following reaction mechanism: 1) Initiation Br2 → 2 Br• 2) Propagation (here a cycle of two steps) Br• + H2 → HBr + H• H• + Br2 → HBr + Br• 3) Termination 2 Br• → Br2 This reaction is catalyzed by platinum. My question is what does the platinum do? I know that platinum is able to split the H2 bond but is that the only function of the platinum in this reaction?
1.A What is the major organic product obtained from the
following reaction? Circle your selection. Provide a mechanism to
support your selection.
1.B
What is the main characteristic of a radical chain initiation
step? What is the main characteristic of a radical chain
propagation step?C.What is the main characteristic of a radical
chain termination step? Write an example for a radical chain
initiation step,a radical chain propagation step, and a radical
chain termination step?Draw out the three mechanisms for each...
16. How many constitutional isomer allylic bromides does the following reaction give? POOP a. 3 b. 4. c. 5 e. not a.-d. 17. Ignoring stereochemistry, what is the overall enthalpy difference of the reaction of 3-ethylpentane, fluorine, and light going to the major mono- fluorinated product? Bond Disassociation Energies kcal/mole Selectivity Ratios, C-HC-F C-CIC-Br C-1 X-X|H-X 102° 3° 1° 98 107 81 68 53F 38 136 F 1 1.2 1.4 12 95 106 80 6853|CI| 58103CI 1 415 3 91...
V2 Q9. Provide reagents for the following transformations 0 CI Provide a stepwise mechanism for the formation of the major product in the following free radical bromination reaction. All steps and intermediates (as well as arrows leading to it) must be shown. Show formation of bromine Br2 (10 points) +HBr NBS, hv 0 Initiation: Propagation Termination Best Wishes! G.Sathianathan
Help on 16, 17, and 18!!!!
? 16. How many constitutional isomer allylic bromides does the following reaction give? NBS A/hv/ROOR C. 5 a. 3 b.4 d. 6 e. not a.-d. 17. Ignoring stereochemistry, what is the overall enthalpy difference of the reaction of 3-ethylpentane, fluorine, and light going to the major mono-fluorinated product? Bond Disassociation Energies kcal/mole C-H C-F C-CI C-Br C- L X -X 98 107 81 68 53 F | 38 95 106 80 68 53 cl...
please answer all thank you so much
Question 1 Which of the following mechanistic steps represents the loss of a leaving group? OH OH2 H Br II 18-05-4 IV AI B. II C. D.IV Question 3 What is product of the following reaction sequence? ОН 1. PCC 2. C2H5MgBr 3. Н* wоrkup ОН ОН ОН IV ОА І В. І С. ІІІ OD. IV Question 4 What is the major product formed in the following reaction? Br NaH A NH2...