3-Hydroxy benzaldehyde Organic Compounds

Para-hydroxy benzaldehyde is an important building block for a number of key organic compounds including p-anisic aldehyde, 3,4,5-trimethoxy benzaldehyde veratral-dehyde, bromoxylin and others. Important uses have been shown in Fig. 5.3. 

By the time comprehensive reviews by Wilds (29) in 1944 and Djerassi (30) in 1953 became available, MPV reactions were a standard reductive technique in the organic chemistry community. For example, a 1945 patent (20) describes the utility of using aluminum alkoxides in the presence of an organic nitrogen as a weak base for the reduction of carbonyl groups on oxo compounds such as 7-hydroxy-cholesterol acetate, benzaldehyde, cinnamic aldehyde, and citronellal. 

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