Tischenko reaction proceeds in the presence of

Question

Tischenko reaction proceeds in the presence of (A) Zn and ZnCl2  (B) Al powder (C) Al ( OC 2 H 5)3 and anhydrous AlCl 3 (D)  FeCl3

Tardigrade Admin · Accepted Answer

Tischenko reaction All aldehyde on heating with aluminium alkoxide (ethoxide or isopropoxide) and anhydrous

A lC l_{3}

or

Z n C l_{2}

undergoes an intermolecular oxidation and reduction similar to Cannizaro reaction but the alcohol and acid instead of appearing as such, react to produce esters.

acetaldehyde 2 C H_{3} C H O A l (O C_{2} H_{5})_{3} anhy A lC l_{3} ethyl acetate C H_{3} COO C_{2} H_{5}

benzaldehyde 2 C_{6} H_{5} C H O A l (O C_{2} H_{5})_{3} anhy. A lC l_{3} benzyl benzoate C_{6} H_{5} C H_{2} OOC \cdot C_{6} H_{5}

Q. Tischenko reaction proceeds in the presence of

$Z n$ and $Z n C l_{2}$

Al powder

$A l (O C_{2} H_{5})_{3}$ and anhydrous $A lC l_{3}$

$F e C l_{3}$

Q. Tischenko reaction proceeds in the presence of

Zn and ZnCl2​

Al powder

Al(OC2​H5​)3​ and anhydrous AlCl3​

FeCl3​

$Z n$ and $Z n C l_{2}$

$A l (O C_{2} H_{5})_{3}$ and anhydrous $A lC l_{3}$

$F e C l_{3}$