Functional Group Transformations

Alcohol to other Functional Groups
Aldehyde/Ketone to other Functional Groups

DIBAL-H reduction

Corey-Fuchs reaction, followed by n-BuLi (2 steps)

Wolff-Kishner reduction

Clemmensen reduction

Thioacetal, followed by reduction (2 steps)

Carboxylic acid to other Functional Groups

Acid activation, followed by NaBH4 reduction

Using NaBH4, I2

acid anhydride, followed by amine

Esterification, followed by amine

Steglich Esterification (for t-butyl ester)

Using Me2SO4 (for methyl ester)

Using MeI, base (for methyl ester)

Ester to other Functional Groups

Reduction to Alcohol, followed by oxidation to aldehyde (2 steps)

Nitrile to other Functional Groups

Pd/C reduction

Raney Ni reduction

Using Urea-Hydrogen peroxide (UHP)

Pinner reaction (HCl, alcohol)

Amide to other Functional Groups

Hofmann rearrangement (for 1o amide only)

Using POCl3

Using SOCl2

Using T3P

Using TFAA

Using Cyanuric chloride

Aromatic Substitution reactions (SNAr)