alkyne + Cu2Cl2 + NH4OH gives red brown ppt is which reaction or test ?
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Hey dear,
● Glaser coupling -
- This reaction was first observed by Carl Andreas Glaser
- It's identification test for terminal alkynes.
- In this reaction, an terminal alkyne reacts with basic cupric chloride and on subsequent oxidation in air gives diyne.
- For example, ethyne couples with itself to produce but-1,3-yne (red brown ppt).
2 CH≡CH ---> CH≡C-C≡CH
Hope this helps you...
● Glaser coupling -
- This reaction was first observed by Carl Andreas Glaser
- It's identification test for terminal alkynes.
- In this reaction, an terminal alkyne reacts with basic cupric chloride and on subsequent oxidation in air gives diyne.
- For example, ethyne couples with itself to produce but-1,3-yne (red brown ppt).
2 CH≡CH ---> CH≡C-C≡CH
Hope this helps you...
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