Beta-propionaldehyde

When added to water as an aquatic herbicide, acrolein undergoes rapid decomposition, especially in sunlight. At the same time, it reacts rapidly with amines, alcohols, and mercaptans of aquatic plants, destroying cell structure and killing the plants (Parent et al. 1992). Mammals drinking acrolein-contaminated water rapidly convert acrolein to saturated alcohol compounds because of the low pH in the upper portion of their GI tracts the primary breakdown product is beta-propionaldehyde (USEPA 1980). 

Propene Propene Oxide Propene Polymer Propenoic Acid Beta-Propiolactone Propionaldehyde Propionic Acid Propionic Aldehyde Propionic Anhydride Beta-Propionolactone Propionyl Oxide N-Propyl Acetate 2-Propyl Acetate Propyl Alcohol... 

Compound Name N-Propyl Mercaptan Isopropyl Mercaptan N-Propyl Mercaptan Isopropyl Mercaptan Glycerine Propionic Acic Propionic Anhydride N-Propyl Alcohol Isopropyl Alcohol Beta-Propiolactone Acetone Acrolein Allyl Alcohol Acrylamide Propylene Propylene Oxide Polypropylene Acrylic Acid Beta-Propiolactone Propionaldehyde Propionic Acid Propionaldehyde Propionic Anhydride Beta-Propiolactone Propionic Anhydride N-Propyl Acetate Isopropyl Acetate N-Propyl Alcohol Isopropyl Alcohol N-Propyl Alcohol Propionaldehyde N-Butyl Alcohol Propylene... 

A mixture of 288 g (4 mols) of isobutyraldehyde, 288 g of methanol was cooled to 10°C and 170 g (2 mols) of 36.6% formalin containing 8.5 g (3% based on isobutyraldehyde) of sodium hydroxide was added dropwise over a 55 minute period to produce alpha,alpha-dimethyl-beta-hydroxy-propionaldehyde. The mixture was stirred for an additional 2 hours at 10-15°C and then contacted with acetic acid to neutralize the catalyst. The excess isobutyraldehyde and methanol were stripped off at a kettle temperature of 50°C at 25 mm. To the residual a,a-dimethyl-beta-hydroxypropionaldehyde a mixture of 260 ml of methanol and 2 g (0.75%) sodium cyanide was added and the solution cooled to 10°C before adding 59.4 g (2.2 mols) of hydrogen cyanide dropwise over a 35 minute period to produce a,y-dihydroxy-p,p-dimethylbutyronitrile. The mixture was stirred at 10°C for one hour period and then contacted with acetic acid to neutralize the catalyst before stripping off the excess methanol to a kettle temperature of 45°C at 18 mm. The crude cyanohydrin was then hydrolysed by heating with 4 mols of concentrated hydrochloric acid at 80°C for 2 hours, then diluting with an equal volume of water and heating at 100°C for an additional 8 hours. The aqueous mixture was extracted continuously with ethylene dichloride. The solvent was... 

Propane sultone beta-Proplolactone Propionaldehyde Propoxur ... 

Lutidine can be prepared from propionaldehyde, formaldehyde and ammonia over a zeolitic catalyst, H-ZSM-5 or H-Beta, but in practice this chemical is isolated from the higher methylpyridines fraction in the pyridine/p-picolinc manufacture. 

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