Wittig / Rosenmund / Wolff Kishner

WITTIG REACTION

The Wittig reaction or Wittig olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide to give an alkene and triphenylphosphine oxide. The Wittig reaction was discovered in 1954 by Georg Wittig, for which he was awarded the Nobel Prize in Chemistry in 1979

ROSENMUND REDUCTION

 The Rosenmund reduction is a hydrogenation process in which an acyl chloride is always reduced to an aldehyde. The reaction was named after Karl Wilhelm Rosenmund, who first reported it in 1918

WOLFF KISHNER REDUCTION

 The Wolff-Kishner reduction is an organic reaction used to convert an aldehyde or ketone to an alkane using hydrazine, base, and thermal conditions. The mechanism begins with the attack of hydrazine of the aldehyde or ketone for form an imine. Proton transfer steps then result in the formation of a N=N bond.