Write chemical equations for the following reactions :

Write chemical equations for the following reactions :

(a) Hydroboration – oxidation reaction (b) Williamson Synthesis (c) Friedel-Crafts Alkylation of Anisole (d) Reimer-Tiemann Reaction

Ans.

(a) Hydroboration-oxidation reaction: RCH=CH2+BH3⋅THF→RCH2CH2OHRCH=CH2​+BH3​⋅THF→RCH2​CH2​OH RCH2CH2OH+H2O2,NaOH→RCH2CHOH+H2ORCH2​CH2​OH+H2​O2​,NaOH→RCH2​CHOH+H2​O

(b) Williamson synthesis: $\text{R-X}+\text{Na}\text{OR}\to \text{R-OR}+\text{NaX}$

(c) Friedel-Crafts alkylation of anisole: C6H5OCH3+R-X+AlCl3→C6H5OR+HClC6​H5​OCH3​+R-X+AlCl3​→C6​H5​OR+HCl

(d) Reimer-Tiemann reaction: PhOH+CHCl3+NaOH→PhOH-CHO+HCl+NaClPhOH+CHCl3​+NaOH→PhOH-CHO+HCl+NaCl