Which of the following reactions give a product that contains a hydroxyl group? [Select] [Select] ASC Which of the following reactions produces a hemiacetal? [Select] A only A. B.C . A&B B only + HBr C. CHCH2 CHO CHE CHO сносновн CHECH, нург . CHOH
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- Choose the most correct set of reagents for the following reactions. 1.? OMe 2. ? a. 1. MsCI, pyridine; 2. NaOH, H2O2, H2O b. 1. HCI, pyridine NaOCH3, CH;OH c. 1. Pl3, pyridine; 2. NaOCH3, CH;OH d. 1. TSCI, pyridine; 2. NaOCH3, CH3OH e. 1. CH30", pyridine; 2. H* f. 1. PBr3, pyridine; 2. H*The structure shown below is of Pitolisant (Waxix®), is a drug to treat narcolepsy. CI Pitolisant – Waxix® Below, see the synthesis of the compound. What are the reactions used? OMs OH OH CI CI O Two Williamson ether synthesis reactions. O Aminal formation followed by an ether interchange reaction. O An SN2 reaction followed by a Williamson synthesis.A nitrile X is treated with LIAIH4 to obtain compound Y(C2H¬N). In a separate reaction, X is hydrolyzed in an acid medium to obtain Z. The product obtained after mixing Y and Z will be A. CH;CONHCH2CH3 B. CH3CH2CONHCH2CH3 C. (CH3COO)(CH;CH;NH3*) D. (CH3CH2CO0)(CH;NH2*)
- e. f. a. C. d. 1. Provide the major product or reagents, as requested. b. Ph Ph Ph OH -COOH OH OH Morfools yd mis susitad OH ? mol of abiotio lyosnad to (lozbyd stand or not indoo Br Mg CO₂ H3O+ CH3Li (excess) conc. KMnO4 A Na₂Cr₂O7 H₂SO4 H₂O CH₂N2Which of the following reagents should be reacted with the reactant to get the given product? Select one: a. O b. O C. O d. methanamine; NaBH4 ethanamine; LiAlH4, diethyl ether, H₂O NaOCH₂CH3; H₂in Pt methanol; DIBAL, H3O+ Br to-tr HWhich one is the electrophile in the following reaction? H;PO4 b) c) HPO; i. b ii. C iii. a iv. d CLEAR MY CHOICE 50 II
- Give the best reagents for the reaction. (CH₂)₂2CHCH₂CH₂C=CH H2O, H2SO4, HgSO4 BH3, H2O2, NaOH OK2Cr207 O H2, Lindlar Catalyst (CH;); CHCH;CHỊCHỊCH Oa) Give the major products or reagents represented by letters A-F: Me NABH, i) MeOH i) CH3NH2 LIAIH4 CI iii) H20 HO. C Br i) NaCN iv) HD ii) H3O i) Base v) OEt ii) H,0 / Heat CHO e OH vi) F H. H20Write the missing product or reagent in each of the following: En0; Eno CO₂Me OH I ?????? OTT 1) p Ts OH (cat.), Me OH CH₂Cl₂,rt. 2 h (98%yield) 2) 1) NaBH4 2) NH₂Cl(aq) 3) NaI0, Bu NBT (COCI), DMSO E₂N, -78°C ACO OAC I-OAC 0 LCHO
- Which alkene cannot be converted into an alkyl bromide with HBr, ROOR, hv, A? III IV A. B. C. D. E. All react Which synthetic route is best to give the major product shown below. ? x XA OH A. 1. BH3; 2. H₂O2, NaOH; 3. HBr; 4. CH3CO₂H B. 1. Br₂, 2. NaCCH; H₂, Lindlar's; 3. O3; 4. H₂O C. 1. NBS, hv, A; 2. H₂, Pd; 3. NaO₂CCH3 D. 1. NBS, hv, A; 2. NaCCH; 3. H₂2, Pd; 4. O3; 5. H₂O E. 1. NBS, hv, A; 2. H₂, Pd; 3. NaCCH; 4. 03; 5. H₂O Which synthetic route is best for the transformation shown below? OH ? OH A. 1. H₂SO4/heat; 2. HgOAC2, H₂O; 3. NaBH4 B. 1. HBr; 2. NaOH, DMSO C. 1. TsCl, pyr; 2. NaOH, DMSO D. 1. TsCl, pyr; 2. KOtBu; 3. BH3-THF; 4. H₂O2, NaOH E. 1. H₂SO4/heat; 2. BH3-THF; 3. H₂O2, NaOH =BIdentify the major product. Assume excess of all reagents as appropriate. OH (1) TsCl/pyridine Ph TCH; (2) NaOCH3/CH3OH "CH3 Ph Select one: а. Ph Ph OCH3 C-C. Ph ob. TCH3 CH3 Ph H H3C Ph Oc. Ph CH3 OTs H H3C Ph od. Ph CH3 OCH3 Ph o . Phent Predict the major product when the compound labelled W below is treated with mercuric acetate (Hg(OAc)2) and H₂O, followed by sodium borohydride in base (NaBH4, OH). OIV Oll OV -Ph OH + enantiomer 11 Ph HO. -Ph W OH + enantiomer ||| НО. -Ph IV -Ph HO V -Ph Next