Solution:
The two reactions are examples of acid catalysed and base catalysed ring opening of epoxides.
The mechanism are given below.

Provide the MAJOR product(s) for the following reactions. SN2
and E2 reaction will only give one major product (the substitution
of elimination product)
major product (the substitution or elimin SOCI, Pyridine HCI (excess) Heat Oh ot H2SO4, H20 Nas DMF, 25 °C NaOH H20, 55 °C Br
OH H20 H2SO4 ОН H2, Pd (1) MCPBA (2) H30+ KMnO4 NaOH, cold
products?
NaOH, A Na2Cr2O H2SO4, H20 NaBH HCI 0°C NO2 Ph.P H3C Na, MeOH H2SO4, H20 NH, 1HỶ, HCN 2. H30*, A
OH "H H20, H+ PCC, CH2Cl2 O Fe2+, H Na2Cr2O7, H2SO4, H20 SHOW HINT SHOW HINT H2SO4, H20 1) Br2 2) KOH H2SO4, H2O, HgS04 1) R2B-H 2) H2O2, NaOH SHOW HINT H2SO4, H20 1) R2B-H 2) H2O2, NaOH O H2SO4, H20, Hg504 O 1) Br2, KOH 2) H20, H+ SHOW HINT ptual Checkpoint the Skill 19.24 the Skill 19.36 ini Score Results by Study sive 1) Br2 2) KOH K2Cr2O7, H2SO4, H20 1) O3 2) DMS 1) O2 2)...
Predict all organic products, showing stereochemistry where
appropriate
HBr (2) heat OH NaOH (3) H20 CH, CH3CH2OH (4). H H2SO4, 25 "C SNa
NH2 1. OH но 210 °C OH Na2 S204 2. 02N NaOH/H20 100 °C 3. CH3COOH Na NaOH/H20 100 °C 2. CH3COOH Na2S,04 1. NaOH/H20 100 oC NO2 но 2. OH но 210 °C
23. A good synthesis of would be H20, H2SO4 H9SO I 1) SiazBH 2) H202 NaOH II н 1) O3 2) Zn, HOAc пI OH 1)KMnO NaOH, A IV 2) H30* A) I B) II C) III D) IV E) All of these are equally useful.
Starting Material Conditions OH PBr3 Eto C NaCN OMs DMF Br NaNH DMSO, 20°C 8 hr 1) NaH, DMF, -78°C 2) A ci NaOH
ETOH -Br heat - Br k. NaOH DMSO NaCN Br DMF m. OH Jones reagent
9. Give the curved arrow mechanism for each reaction. H2SO4 b. H,o OH c. H20 H2SO d. OH H2o 10. For the following reaction, H,so, H,O он a. Give the curved arrow mechanism for the reaction, showing formation of both products b. Identify the major product and explain why it is favored. c. Draw the energy diagram for the formation of the major product. 11. Give the major organic product for the following reactions. If a racemic mixture is expected,...