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1-Propynyllithium reacts with (R,R)-2,3-dimethyloxacyclopropane in a stereoselective reaction. Draw a curved arrow mechanism and the missing intermediate and product, clearly showing stereochemistry with a wedge and hashed bond at each stereocenter.
Question 13 Predict the major product for the following reaction and previde a curved arrow mechanism for the formation of the product он HBr correct Draw the product of the reacton H,C Br CH
13. Give the curved arrow mechanism for each alkylation reaction. a. LiNiPr, (LDA) a. b. CH,Br CH, a. LiNiPr, (LDA) b. CHy-CHCH, b. 14. Explain why reaction G gives good yields of the product shown, while the yields are not as good with reaction H. о a. LDA G: b. CH,I CH a. LDA H: b. CH,I CHy 15. Give the major organic product of each reaction. Cl2 a. LDA CH,CO,H b. PЬСH, a. LDA Br2 b. f. b. CH,CH,CI...
Draw an arrow-pushing mechanism for each step of the following
two-step reaction sequence and draw the resulting products. Don\'t
worry about the phenyl groups attached to phosphorus; just
abbreviate them with Ph.
Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw resulting products. Don't worry about the phenyl groups attached to phosphorus; just abbreviate them wi Ph. 1.CH,I Ph-P: -> phosphonium ylide 2.BuLi Ph Draw Hs, lone pairs, and curved arrows. Draw Hs, lone...
describe each as Sn1, Sn2, E1 and E2 then draw a
curved arrow mechanism for each reaction.
NaSH DMSO SH KOH HO DMSO Br NANH NH3 OTs NH TsO TsO CHs CH3 Nal CH3 acetone CH O O
Problem #1 Draw the product expected from each of the following reaction sequences. Show all intermediate structures. O a) CHE CH, 1.CF,CO3H 2. LAH, THF.
1.) Draw the mechanism and intermediate/product for each step of the following reaction. Each bo>x represents a structure that should be given. Mechanisms for each step can be included with the previous structure. (20 points) (no mech. needed here) Br Mg ether H30 (no mech. needed here) 1.) CH3MgBr CrO,/H2SO4 2) H o
1.) Draw the mechanism and intermediate/product for each step of the following reaction. Each bo>x represents a structure that should be given. Mechanisms for each step can...