The following reaction
is known as :
← JEE Main 2014 · 11 Apr · Shift 1
ChemistrySingle correct+4 / -1Question 51 of 90
JEE Main 2014 · 11 Apr · Shift 1, Chemistry question 51

Answer and worked solution
Official answer: D
Formylating a phenol with HCN and HCl over anhydrous is the Gattermann reaction. Gattermann-Koch uses CO/HCl.