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Topic: Functional Grp #3: Ethers

Topic: Functional Grp #3: Ethers. Do Now Name the following…. 1,1-ethanediol. methanol. 1-propanol. Ethers. General formula R  O  R  where R  may or may not be same as R R and R  are hydrocarbon branches O is oxygen bridge Ethers are not linear they are bent, like water.

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Topic: Functional Grp #3: Ethers

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  1. Topic: Functional Grp #3: Ethers Do Now Name the following… 1,1-ethanediol methanol 1-propanol

  2. Ethers • General formula ROR • where R may or may not be same as R • R and R are hydrocarbon branches • O is oxygen bridge • Ethers are not linear • they are bent, like water

  3. Properties of Ethers • Pure ether: no hydrogen bonding • weak dipole-dipole interactions • Relatively low BP compared to similar alcohols • But higher BP than similar alkanes • Ethyl ether once used as anesthesia

  4. Naming Ethers • If both hydrocarbon branches are identical: • name the branch (once) & add the word ether • If 2 branches are different: • list them in alphabetical order followed by the word ether

  5. Methyl Ether Propyl Ether Methylpropyl Ether H H HCOCH H H H H H H H H HCCCOCCCH H H H H H H H H H H HCOCCCH H H H H

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