摘要:
Novel lactones of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 when identical are selected from the group consisting of chlorine and bromine and when at least two are different, are selected from the group consisting of fluorine, chlorine and bromine and a novel process for their preparation and a process for the preparation of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR2## The acids of formula IV are useful to prepare esters of elevated insecticidal activity.
摘要:
Novel lactones of 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 when identical are selected from the group consisting of chlorine and bromine and when at least two are different, are selected from the group consisting of fluorine, chlorine and bromine and a novel process for their preparation and a process for the preparation of cis 2,2-dimethylcyclopropane-1-carboxylic acids of the formula ##STR2##
摘要:
Novel lactones of 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 when identical are selected from the group consisting of chlorine and bromine and when at least two are different, are selected from the group consisting of fluorine, chlorine and bromine and a novel process for their preparation and a process for the preparation of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR2##
摘要:
A novel process for the preparation of sulfonic acid esters containing a lactonic ring comprising compounds in the trans form in the 4- and 5-positions having (4SR,5RS), (4S,5R) or (4R,5S) configuration of the formula ##STR1## wherein Z is selected from the group consisting of alkyl of 1 to 4 carbon atoms and cycloalkyl and monocyclic aryl optionally substituted with at least one member of the group consisting of alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen and nitro and R is organic residue of an optionally chiral alcohol of the formula ROH and a process using the compounds of formula I to prepare compounds of (1RS, 4RS, 5SR), (1S, 4S, 5R) or (1R, 4R, 5S) configuration of the formula ##STR2## wherein X is selected from the group consisting of hydrogen and R useful for the preparation of insecticidally active esters.
摘要:
Novel 4-methyl-3-formyl-pentanoic acid derivative of the formula ##STR1## wherein Hal is a halogen, R.sub.1 is alkyl of 1 to 12 carbon atoms and A and B are .dbd.0 or A is halogen and B is --OR.sub.2 and R.sub.2 is alkyl of 1 to 12 carbon atoms, their preparation and their use as intermediates.
摘要:
Novel cyclopropane carboxylic acid esters of the formula ##STR1## wherein X.sub.1 is selected from the group consisting of hydrogen, fluorine, chlorine and bromine, X.sub.2 is selected from the group consisting of fluorine, chlorine and bromine, X.sub.3 is selected from the group consisting of chlorine, bromine and iodine and R is selected from the group consisting of ##STR2## and benzyl optionally substituted with at least one member of the group consisting of alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 6 carbon atoms, alkenyloxy of 2 to 6 carbon atoms, alkadienyl of 4 to 8 carbon atoms, methylenedioxy, benzyl and halogens, R.sub.1 is selected from the group consisting of hydrogen and methyl, R.sub.2 is selected from the group consisting of monocyclic aryl and --CH.sub.2 --C.tbd.CH,R.sub.3 is an aliphatic of 2 to 6 carbon atoms having at least one double bond, R.sub.4 is selected from the group consisting of hydrogen, --CN and --C.tbd.CH, R.sub.5 is selected from the group consisting of chlorine and methyl, n is 0, 1 or 2, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are individually selected from the group consisting of hydrogen, chlorine and methyl and S/I indicates that the ring may be aromatic, dihydro or tetrahydro having pesticidal properties, and a process for their preparation.
摘要:
Novel 3-formyl-4-methyl-pent-3-ene-1-oic acid of the formula ##STR1## and a process for its preparation and intermediates and a process for the preparation of compounds of the formula ##STR2## wherein W is selected from the group consisting of hydrogen and R.sub.1 of an optionally chiral alcohol R.sub.1 OH, useful as an intermediate for the production of numerous esters having elevated insecticidal activity.
摘要:
A process for the preparation of tetrasubstituted novel compounds of the formula ##STR1## wherein Y' is selected from the group consisting of --CN and --COOR, R is alkyl of 1 to 6 carbon atoms and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are individually selected from alkyl of 1 to 4 carbon atoms or R.sub.1 and R.sub.2 or R.sub.3 and R.sub.4 together with the carbon atoms to which they are attached form a carbon homocycle of 3 to 6 carbon atoms with the 2 substituents not forming the ring being alkyl of 1 to 4 carbon atoms or R.sub.1 and R.sub.2 on the one hand and R.sub.3 and R.sub.4 on the other together with the carbon atom to which they are attached form a carbon homocycle of 3 to 6 carbon atoms and Z is an aromatic group which are useful intermediates for the preparation of insecticidal esters.
摘要:
Novel 3-formyl-4-methyl-pent-3-ene-1-oic acid of the formula ##STR1## and a process for its preparation and intermediates and a process for the preparation of compounds of the formula ##STR2## wherein W is selected from the group consisting of hydrogen and R.sub.1 of an optionally chiral alcohol R.sub.1 OH, useful as an intermediate for the producton of numerous ester having elevated insecticidal activity.
摘要:
A novel process for the preparation of a compound of the formula ##STR1## wherein X is selected from the group consisting of oxygen and sulfur and n is 1,2 or 3 comprising reacting in an organic solvent in the presence of a strong base the lactone of cis 2,2-dimethyl-3S-(dihydroxymethyl)-cyclopropane-1R-carboxylic acid with a compound of the formula ##STR2## to obtain a compound of the formula ##STR3## reacting the latter with an acid agent in an apolar organic solvent to obtain a compound of the formula ##STR4## and reacting the latter with a basic agent in an apolar organic solvent to obtain a compound of formula I useful for the preparation of insecticidal esters and the novel compounds of formula I wherein n is 1 or 3.