This transformation of allyl phenols into propenyl phenols is very general (see Ber., 1889, 22, p. 2747; 1890, 23, p. 862).
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.
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.
When heated with glycerin to ioo C. it yields formic acid and carbon dioxide; above this temperature, allyl alcohol is formed.
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.
The bulb has a strong and characteristic odour and an acrid taste, and yields an offensively smelling oil, essence of garlic, identical with allyl sulphide (C 3 H 5) 2 S (see Hofmann and Cahours, Journ.
It may be synthetically prepared by distilling allyl ethylamine over heated lead oxide (W.