摘要:
1,1-dialkoxy- or 1,1-(.alpha.,.omega.-methylenedioxy)-non-2-yn-9-ol and their OH-protected derivatives of the general formula I ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.6 -alkyl or together form an alkylene chain of 2 to 5 carbon atoms and X is hydrogen or a protective group which can be eliminated, their preparation and their use as intermediates.
摘要:
Agent for controlling the peach twig borer, Anarsia lineatella, by the confusion technique containing a mixture of E5-decen-1-ol (I), E5-decen-1-yl acetate (II) and Z5-decen-1-ol (III) and Z5-decen-1-yl acetate (IV), the amount of the Z isomers (III) and (IV) being up to 50% by weight, based on the mixture (I) to (IV), and, if required, conventional additives and assistants.
摘要:
Haloalcohols of the general formula IHal--X--OH (I)where X is straight-chain or branched, substituted or unsubstituted alkylene of 4 or more carbon atoms in the chain, which may be interrupted by one or more heteroatoms, and Hal is halogen, are prepared by reacting a diol of the general formula IIHO--X--OH (II)where X has the above meanings, with an aqueous hydrogen halide solution in a water-immiscible organic solvent which is inert under the reaction conditions, at from 50.degree. to 150.degree. C., using an excess of hydrogen halide, based on the diol of the general formula II, of from 10 to 200 mole percent and setting a volume ratio of inorganic phase: organic phase of from 1:2 to 1:50.
摘要:
3,9-Dihydroxynonyne and its derivatives protected at the 9-OH function, of the general formula I ##STR1## where R is hydrogen or a conventional alcohol protective group, and processes for the preparation of the compounds I.
摘要:
Dien-1-ols of the general formula I ##STR1## where the radicals R.sup.1 to R.sup.7 are identical to or different from one another and each is hydrogen or straight-chain or branched alkyl or 1-12 carbon atoms and n is 1-14, are prepared by dehydrating a hydroxylalkenyl tert-butyl ether of the formula II ##STR2## in the presence of an acidic catalyst at elevated tempertures and essentially at the same time splitting off the tert-butyl protective group, as is 9-hydroxydodec-10-enyl 1-tert-butyl ether which is useful as an intermediate for synthesizing 8,10-dodecadienol.
摘要:
Urea derivatives of the formula ##STR1## where R, X, Z, Het and n have the meanings given in the description, are used for controlling undesirable plant growth.
摘要:
Dien-1-ols of the general formula I ##STR1## where the radicals R.sup.1 to R.sup.7 are identical to or different from one another and each is hydrogen or straight-chain or branched alkyl of 1-12 carbon atoms and n is 1-14, are prepared by dehydrating a hydroxyalkenyl tert-butyl ether of the formula II ##STR2## in the presence of an acidic catalyst at elevated temperatures and essentially at the same time splitting off the tert-butyl protective group, as is 9-hydroxydodec-10-enyl 1-tert-butyl ether which is useful as an intermediate for synthesizing 8,10-dodecadienol.
摘要:
An olefinically unsaturated compound, in particular a very pure cis-isomer of an alkenylhydroxy compound of the formulaCH.sub.3 (CH.sub.2).sub.m --CH.dbd.CH--(CH.sub.2).sub.n --OR (I),where R is hydrogen or a protective group which can virtually be eliminated, m is from 1 to 12 and n is from 1 to 10, is obtained by catalytic partial hydrogenation of the corresponding acetylene derivative over a supported catalyst which contains from 0.05 to 5% by weight of palladium and from 0.05 to 15% by weight of zinc and/or cadmium.
摘要:
Alkenecarboxylates of the formula I ##STR1## where R.sub.1 is alkyl of 1 to 6 carbon atoms and n is 2, 3 or 4, are prepared by a process which comprises reacting a lactone of the formula II ##STR2## where R.sub.2 is hydrogen or methyl and m is 1 or 2, with an alkanol of 1 to 6 carbon atoms in the presence of an acidic catalyst at from 150.degree. to 400.degree. C.
摘要:
The invention relates to a method for electron beam induced deposition of electrically conductive material from a metal carbonyl with the method steps of providing at least one electron beam at a position of a substrate, storing at least one metal carbonyl at a first temperature, and heating the at least one metal carbonyl to at least one second temperature prior to the provision at the position at which the at least one electron beam impacts on the substrate.