O Chem Word Scramble
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Question | Answer |
Keytone | (R)2C=O |
Terminal alkyne --> 1.disiamylborane 2. OH, H2O2, H2O | an aldehyde. Addition of H and OH |
Terminal alkyne --> H2O, H2SO4, HgSO4 | a keytone. Addition of H and OH |
Internal alkyne ---> 1. BH3/THF 2. OH, H2O2, H2O | Keytones. Addition of H and OH |
Internal alkyne ---> H2O, H2SO4 | Keytones. Addition of H and OH |
Addition of Cl2 or Br2 to an alkyne ---> CH2Cl2 | trans addition, but ultimately symmetical |
Lindlar catalyst to alkyne | cis addition of Hydrogen |
Na or Li/ NH3(liq) to an alkyne | trans addition of Hydrogen |
Retains double bond | NH3(liq)/ H20, H2SO4/ Lindlar Catalyst/ Disiamylborane |
Addition of NaOH | The OH knocks off the large substituent and it then attaches with opposite stereochemistry. |
When you add Br2 across a double bond, which solvent should you use? | CH2Cl2 |
When you add H2O to a triple bond, the product is | an enol which changes to a keytone |
Terminal alkynes can be used to obtain | aldehydes by using disiamylborane |
all functional groups have a higher priority than alkynes except | ethers and halides |
1. BH3/THF 2. H2O, OH, H2O2 to a terminal alkyne | anti markovnikov addition |
1. BH3/THF 2. H2O, OH, H2O2 to an internal alkyne | keytone |
NaNH2 ---> | deprotinizes |
NaNH2/ R-Br | adds an R chain |
If you want a keytone from an internal alkyne, your reagent is | H2O, H2SO4 |
If you want a keytone from a terminal alkyne, your reagent is | H2O, H2SO4/ HgSO4 |
Created by:
maw247
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