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How is 1-propoxy propane synthesised fro...

How is 1-propoxy propane synthesised from propan-1-ol ? Write the mechanism of this reaction.

Text Solution

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Two methods can be employed for this preparation :
(i) Williamson.s synthesis
(a) `underset("Propan-1-ol")(3CH_(3)CH_(2)CH_(2)OH+PBr_(3))tounderset("1-bromopropane")(3CH_(3)CH_(2)CH_(2)Br+H_(3)PO_(3))`
(b) `underset("Propan-1-ol")(2CH_(3)CH_(2)CH_(2)OH+2Na)tounderset("Sodium propoxide")(2CH_(3)CH_(2)CH_(2)O^(-)Na^(+)+H_(2))`

(ii) By the dehydration of 1-propanol with conc. `H_(2)SO_(4)` at 413 K.
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