1.

How is 1 - propoxypropane synthesised from propan -1 - ol? Write mechanism of this reaction?

Answer»

Solution :(a) 1 - PROPOXYPROPANE can be synthesised using Williamson synthesis as FOLLOWS :
(i) `underset("Propan - 1 - ol")(3CH_(3)CH_(2)CH_(2)OH)+PB r_(3)RARR underset("1 - Bromopropane")(3CH_(3)CH_(2)CH_(2)Br+H_(3)PO_(3))`
(ii) `underset("Propan - 1 - ol")(2CH_(3)CH_(2)CH_(2)OH)+2Na rarr underset("Sodium propoxide")(2CH_(3)CH_(2)CH_(2)O^(-)Na^(+))+H_(2)`

(B) It can be also be synthesised by dehydration of 1 - propanol with CONC. `H_(2)SO_(4)` at 413 K.


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