Hydratropaldehyde

The glycidic esters are of interest primarily because upon hydrolysis aud decarboxylation they aflFord aldehydes (if ClCHjCOOEt is used) or ketones (if substituted chloroacetic esters- ClCHRCOOEt are employed) having a higher carbon content than the original aldehyde or ketone. Thus (I) gives o-phenyl-propionaldehyde or hydratropaldehyde (II) ... 

Hydratropa-aldehyd, n. hydratropaldehyde. -alkohol, m. hydratropic aleohol. -s ure, /. hydratropic acid. 

Hydratropaldehyde has been prepared by hydrolysis of phenylmethylglycidic ester,2 3 4 by chromyl chloride oxidation of cumene,5 by the elimination of halogen acid or water from halohydrins or glycols,5 8 and by the distillation at ordinary pressure of methylphenylethylene oxide.9,10... 

Hippuric acid, 584 Hoesch reaction, 727J, 736, 737 Hofmann reaction, 413, 414, 754, 773 Homophthalic acid, 753, 771 Hot plate, electric, 58, 61 Hydratropaldehyde, 906, 907 Hydrazine hydrate, 190, 976, 977 Hydrazines, 1075 ... 

Chiral ligand Catalyst precursor Reaction conditions Isomeric Hydratropaldehyde l Ref. 

C9H10O, Mr 134.18, bp 15 kPa 92-94 °C, d 0 1.0089, n 1.5176, identified in dried mushroom, is a colorless liquid with a green hyacinth odor. Hydratropaldehyde can be hydrogenated to hydratropic alcohol, which is also used to a limited extent as a fragrance material. Hydratropaldehyde is obtained from styrene by oxosyn-thesis small quantities of the isomeric dihydrocinnamaldehyde are formed as a byproduct. Hydratropaldehyde is used in perfumery in blossom compositions. 

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