Abstract: A process for the preparation of polycyclic nitrogen-containing compounds of the formula ##STR1## where R is hydrogen or an organic radical, wherein a compound of the formula ##STR2## where Alk is alkyl of 1 to 4 carbon atoms and R has the above meanings, is reacted with a solution of an alkali metal hydroxide or of calcium hydroxide and the product is then oxidized.

Abstract: A process for the simultaneous preparation of pyrazole and triazoles by reacting a triazoline compound with a basic compound and then oxidizing the product with hydrogen peroxide.The triazoles and pyrazole obtainable by the process of the invention are valuable starting materials for the preparation of dyes, pesticides and drugs.

Abstract: 1-Hydroxypyrazole and a process for its preparation by conversion of isoxazolineazoxy compounds at 140.degree.-600.degree. C.The end products obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and drugs.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: Tricyclic nitrogenous compounds having strong plant growth regulating properties are disclosed. The compounds display the general formula ##STR1## wherein A is one of several nitrogen-containing radicals, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are selected from various recited aliphatic, aryl, araliphatic and heterocyclic groups. R.sup.3 and R.sup.4 may also together form one of a number of nitrogen, sulfur and oxygen containing radicals. These compounds have a variety of uses, including the reduction of plant growth height without harm to the plant.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: Mono- and poly-ethylene glycol dialkyl ethers IR.sup.1 --O--(--CH.sub.2 --CH.sub.2 --O--).sub.n --R.sup.2where R.sup.1 is C.sub.1 -C.sub.4 -alkyl, R.sup.2 is C.sub.3 -C.sub.5 -alkyl and n is from 1 to 100, are prepared by reacting monoalkyl ethers IIR.sup.1 --O--(--CH.sub.2 --CH.sub.2 --O--).sub.n --Hwith a C.sub.3 -C.sub.5 -olefin III in the presence of an acid ion exchanger at from 1 to 200 bar and from 40.degree. to 150.degree. C., the reaction being started at from 100.degree. to 150.degree. C. and the temperature then being lowered, in at least two approximately equal steps, to from 40.degree. to 80.degree. C., the temperature being dropped in each case to the next-lower level when the conversion per unit time no longer changes significantly.

Abstract: Recovery of pure propylene oxide from propylene oxide which is contaminated by C.sub.6 hydrocarbons and methyl formate, by distillation with the addition of more methyl formate so that the amount of methyl formate is four times that of the 2-methylpentane present.

Abstract: A continuous process for the manufacture of cyclohexanol from cyclohexene in two stages involving the addition of sulfuric acid and hydration, the addition of sulfuric acid being carried out in the presence of iron(II) sulfate. In a special embodiment, the addition of sulfuric acid is carried out in the first stage at atmospheric pressure and at the boiling temperature of cyclohexene.

Abstract: Organic monoisocyanates and/or polyisocyanates are manufactured by reaction of primary organic amines with phosgene in the absence of organic solvents.

Abstract: Organic isocyanates are manufactured, in the absence of organic solvents, by reaction of primary organic amines with hydrogen chloride, to give amine hydrochlorides, subsequent phosgenation, and thermal decomposition of the carbamyl chlorides formed as intermediates.