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- #National Eligibility Cum Entrance Test
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Which reduction method is used to convert cynobenzene into benzaldehyde
Answers (1)
To convert cyanobenzene (C6H5–CN) into benzaldehyde (C6H5–CHO), the reduction method used is Stephen's reduction.
The reagent used in the Stephen reduction is- Stannous chloride (SnCl2), Hydrochloric acid (HCl), followed by hydrolysis (with water). $$
C_{6}H_{5}–CN \text {(Cyanobenzene)} → C_{6}H_{5}–CH=NH·HCl \text {(Imine Salt)} →C_{6}H_{5}–CHO (Benzaldehyde)
$$
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