Which of the following oxidants will convert a primary alcohol to an aldehyde? s

Question

Which of the following oxidants will convert a primary alcohol to an aldehyde? sodium dichromate /sulfuric acid copper oxide 3 & 4 3 2, 3, & 4 1,2, 3, & 4 none of the above pyridinium chlorochromate dimethylsulfoxide, oxalyl chloride Which of the following reactions or series of reactions would reduce 3-metylbutan-2-ol into 3-methylbutane? 1. ZnCl2/HC 2. t-butoxide/t-butanol 1. TsCl/pyridine 2. LiAlH4 1. NaOCH3 H2S04/heat 1. TsCl/pyridine 2. conc. KMnO4 1. pyridinium chlorochromate 2. ZnCl2/HCl Identify the sequence of reactions that successfully completes the following transformation. 1. HBr / hv 2. Nal, acetone HI / hv 1.BH3 2. H2O2 / NaOH 3. P, I2 A and C all of the above Given a sample of (R)-2,3-dimethylhexan-3-ol, which of the following would be the best synthesis of (R) -3 - chloro - 2,3 - dimethylhexane? 1. TsCl/Pyridine 2. NaCl HCl/ZnCl2 PCI3 SOCI2 none of the above Which of the following reagents can be used to convert cyclopentanol to cyclopentane? TsCl, pyridine followed by LiAIH4 Na2Cr2O7, H2SO4 NaBH4 followed by H3O+ H2SO4, heat followed by H2, Pt both A and D

Explanation / Answer

45 - B

46-B

47-E

48-D

49-E

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