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Synthesis of aldehydes


Oxidation of alcohols, rearrangements

Benzylic oxidation

Oxidation of alkenes

Cleavage of alkenes


Reaction of alkynes

Hydrolysis or deprotection

Recent Literature

A hypervalent iodine reagent, (diacetoxyiodo)benzene, and catalytic amount of sodium azide in acetonitrile enable an oxidative decarboxylation of 2-aryl carboxylic acids into the corresponding aldehydes, ketones, and nitriles in good yields at room temperature. The advantages of this protocol are short reaction times and mild reaction conditions.
V. N. Telvekar, K. A. Sasane, Synlett, 2010, 2778-2779.

Chromium(III) tetraphenylporphyrin triflate is an efficient and characteristic Lewis acid catalyst for a regio- and stereoselective rearrangement of epoxides to aldehydes. Optically active β-siloxy aldehydes are easily available through Sharpless epoxidation of allylic alcohols, followed by silylation and rearrangement.
K. Suda, T. Kikkawa, S.-i. Nakajima, T. Takanami, J. Am. Chem. Soc., 2004, 126, 9554-9555.