Question 17 Please predict the products for each of the following reactions. Clearly show the regiochemistry (Markovnikov vs anti-Markovnikov) and stereochemistry (syn- vs anti- or both). If a mixture of enantiomers is formed, please draw all the enantiomers. A Bra CH₂OH 1.03 2. DMS KMnO4, NaOH cold HI 18 17 16 15 12 Pd or Pt (catalyst) 20 1 2 14 13 12 11 10 mCPBA 1. Os04 2. H₂O₂ CH,COSH (peroxyacid) Pd or Ni (catalyst) 9 HBr ROOR (peroxide) H₂O H₂SO4 HCI 1. BH3.THF 2. H₂O2, NaOH Br2 Br2 H₂O BH3⚫THF B с D OH ...OH OH 44444 OH OH OH "OH OH A B ос D OH OH OH OH OH OH OH "OH OH OH
Reactions of Ethers
Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.
Epoxides
Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.
Williamson Ether Synthesis
An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.
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