Aldehyde is more reactive than ketone so for protect the aldehyde we us ethylene glycol in presence of acidic medium after that we reduce the ketone and further we add water.
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17) What sequence of reactions would best accomplish the following conversion? 0 0 OH 0 CH3CCH2CH...
1. Give a sequence of reactions to accomplish the following transformation? Show mechanism 2. What reagent(s) would accomplish the following? Show mechanism. R-CH2-NH2 R-C-NH2 3. What would result from the reactions shown below? Hsco-s-OCH3 large excess) NaOH нон H,0 но ОН "ОН (a and B) 4. Predict the major product of the following reaction. CHNNH 3 equivalents) но CHCH2OH Heat он CH2OH Draw the Haworth projection for chair conformation of a-D-Glucopyranose (shown below) CH2OH HO H OH OH
24. Propose a multi-step sequence of reactions to accomplish the following synthesis. (10 pts.) CN OH OH
4. What sequence would best accomplish this transformation? OH - acid (a) [1] SOCl2, [2] (CH3)2NH (b) [1] NH3, [2] excess CHI (c) NaBH4, [2] (CH3)2NH Ta) LiN(CH3)2 - NA
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...
Identify the reagents you would use and draw the sequence of reactions needed to accomplish the following transformations. Show all intermediates (no curved arrows). ^ Br only source of carbon
Which reagents would best accomplish the following transformation? 0 OH O 1. CH3NH2 2. LiAlH4 3. H30+ O 1. p-TsOH, HOCH2CH2OH 2. CH3NH2 3. H30+ O 1. SOCl2, pyridine 2. CH3NH2 O 1. Potassium Phthalimide 2. CH3NH2 3. N2H4
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
please help Which reaction sequence would best accomplish this transformation? ON N(CH3)2 LIN(CH3)2 SOCI (CH3)2NH NH, CH 1 (excess) O NaBH (CH3)NH Question 5 (2 points) Which reaction sequence is preferred for this conversion? chyckéon --ch,CH.CH O soc. CHUMBO SOCCHIO Which reaction sequence is preferred for this conversion? chyce.Con -ca.ch.ch O sock CHxMgBr – H40 O soch. (CH)Culi. OCHMBYMO O sock, CHL. HO
For each of the reactions, show the reafents that would best accomplish the given synthesis, according to reactions we have atudied in class. be sure to number your steps. (a) CH3 ? CH3 "ОН (b) ? CH3CH2-CEC-CH2CH3 H CH2CH3 C=C H3CH2C H ? (CH3)2CHCH2C=CH o (CH3)2CHCH2CCH3 Br ? + enantiomer ( e) -CEC-H CEC (1) Hint: this is a multistep synthesis. Propose a series of reactions that would achieve the following transformation. Make sure to number the steps. . ?
What reagent would you use to accomplish each of the following reactions?