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1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s)...
Which reaction sequence would accomplish this transformation? HO ter H 01.H20+, CH2OH 2. NaBH4 3. Hz0+ O 1. pTSOH, HOCH,CH,OH 2. CH3MgBr 3. H30+ O 1. p-TsOH, HOCH CH2OH 2. NaBH4 3. H30+ O 1. CH3MgBr 2. H30+ 3. CH3OH What is the best reagent(s) for the following transformation? O OH 1. LiAlH4 2. H30+ OCH3CH2OH, H2SO4 O NaOH, heat mCPBA What is the major product in the following reaction? 1. CH2CH2MgBr 2. H30* O o o OH OH What...
H 17) Select the missing reagent re required to accomplish the following transformation. 1)? My MgBr JOHT 2) Hz0+ a) b) in 18) Select the major product of the followings uct of the following series of reactions. 1) NaCN, HCI Lim >1, Ramey Ni ? 2) H2(g), Raney Ni OH OH ОН OH "La Nit doo you o Los NH2 OH 11. no
18. Draw the product of the following Dieckmann cyclization: 1) NaOCH2CH3 CH3CH2OH 2) H30* 19. Glucosamine is a product of the fermentation of corn and is shown below. Draw the Fischer projection of glucosamine: OH H ОН NH2 OH 20. Draw the most stable chair conformation of the D-idose, whose Fisher projection is shown below. Is it an a-or B-anomer? CHO HO -H H- -OH HO Н H -OH CH2OH
what is the major product in the following reaction? which reaction sequence would accomplish this transformation? What is the major product in the following reaction? 1. CHyl (excess) NH 2. Ag2O, H2O, heat HN Which reaction sequence would accomplish this transformation? yogh Н 1. H30+, CH2OH 2. NaBH, 3. H20+ O 1. p-TsOH, HOCH,CH,OH 2. NaBH4 3. H30+ 01. pTsOH, HOCH,CH,OH 2. CH3MgBr 3. H307 O 1. CH_MgBr 2. H3O+ 3. CH3OH What is the best starting material to synthesize...
What reagent(s) would be required to accomplish the transformation shown? Please show all steps. What reagent(s) would be required to accomplish the transformation shown? HA 60 SES -các-CH, C-CHE O 1 . H2, PL H2, Lindlar's catalyst Na, liq. NH3, then H20
Give the mechanism for the following reactions to explain final product 1. OH CH2 CH 1. CHs 2. OH, heat "он (ехсess) 1, (еxcess) 2. 1.CH2 —СHCCH3 2. но* 3.
2) Show how you would accomplish the following transformations. These are all essentially one step reactions (depending on how you count). OH Br OH OH OH он OH он 0 но
Provide a step-by-step mechanism to account for the product of each of the following reactions. Show the structure of each of the intermediates and use curved arrows to indicate electron flow in each of these steps. 3. Provide a step-by-step mechanism to account for the product of each of the following reactions. Show the structure of each of the intermediates and use curved arrows to indicate electron flow in each of these steps. a) NaOEt (1 equiv) EtOH O OH...
23) Select the best reagent(s) to accomplish the following transformation. a) i) 2 CH3CH2MgBr; ii) H30+ c) CH3CH2Br b) i) (CH3CH2)2CuLi; ii) H2O d) i) 2 CH3CH2Li; ii) H30+ 24) Select the best reagent(s) accomplish the following transformation. NH2 a) i) LiAlH4; ii) H30* c) H2O b) SOCI d) H30, heat
Problem #2 Show how you would accomplish the following transformation. You may use any reagent necessary. Oh oh