The simplest member of the series is acrolein, C 3 H 4 0 or CH 2: CHï¿½CHO, which can be prepared by the oxidation of allyl alcohol, or by the abstraction of the elements of water from glycerin by heating it with anhydrous potassium bisulphate.
EUGENOL (allyl guaiacol, eugenic acid), C10H1202,anodoriferous principle; it is the chief constituent of oil of cloves, and occurs in many other essential oils.
Soc., 1901, 79, p. 828) has resolved benzyl-allyl-phenyl-methylamine iodide by boiling with silver d-camphorsulphonate in a nearly anhydrous mixture of acetone and ethyl acetate.
The residue crystallizes slowly, and the crystalline product is almost wholly d-benzyl-allyl-phenyl-ammonium-d-sulphonate, the corresponding /-compound remaining as a syrupy residue.
When heated with glycerin to ioo C. it yields formic acid and carbon dioxide; above this temperature, allyl alcohol is formed.
Allyl cyanide boils at 119° C. Benzonitrile boils at 190.6° C. When solidified it melts att7° C. It is easily soluble in alcohol and ether.
Allyl alcohol >>
Crotonic acid, so named from the fact that it was erroneously supposed to be a saponification product of croton oil, may be prepared by the oxidation of croton-aldehyde, CH3 CH:CH CHO, obtained by dehydrating aldol, or by treating acetylene successively with sulphuric acid and water; by boiling allyl cyanide with caustic potash; by the distillation of 0-oxybutyric acid; by heating paraldehyde with malonic acid and acetic acid to, oo C. (T.
Thiourea and many of its unsymmetrical derivatives have marked physiological action; thiourea causes a slowing of the pulse and respiration, cardiac failure, and death in convulsions; phenyl-, ethyland acetyl-thiourea are actively toxic. The most important derivative pharmacologically is allyl-thiourea, also known as thiosinamine or rhodallin, NH2 CS NH CH2 CH:CH2.
It may be synthetically prepared by distilling allyl ethylamine over heated lead oxide (W.
This substance when heated with hydriodic acid to 300° C. is converted into a-propyl piperidine, which can also be obtained by the reduction of a-allyl pyridine (formed from a-methyl pyridine and paraldehyde).
ALLYL ALCOHOL, C 3 H 5 OH or CH 2 :CHï¿½CH 2 OH, a compound which occurs in very small quantities in wood spirit.
The following monatomic alcohols receive special treatment under their own headings: - Alcohol (Ethyl), Allyl Alcohol, Amyl Alcohols, Benzyl Alcohol, Butyl Acohols, Methyl Alcohol, and Propyl Alcohols.
Drewson, Ber., 1883, 16, p. 2207); by passing the vapour of allyl aniline over heated lead oxide; by the condensation of ortho-aminobenzaldehyde with acetaldehyde in the presence of aqueous.