The given reaction
$C_6H_5-CHO + Br-CH_2-COOC_2H_5 \xrightarrow[(ii) HOH/NH_4Cl, (iii) \Delta]{(i) Zn} C_6H_5-CH=CH-COOC_2H_5$
is known as:

  • A
    Perkin reaction
  • B
    Knoevenagel reaction
  • C
    Reformatsky reaction
  • D
    Claisen-Schmidt reaction

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