Abstract: The invention provides novel fluoro-imides/amides of the formula: ##STR1## in which at least two of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are fluorine and any of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 which is not fluorine, is chlorine, and A is selected from:(a) ##STR2## in which R.sub.1 is hydrogen or a halogen atom, preferably chlorine,Z is CH or a nitrogen atom,n is 0 or 1, andR is an alkyl group having 1-6 carbon atoms, preferably methyl, or a halogen atom, preferably chlorine;(b) ##STR3## in which Z, n and R have the above-stated meanings: (c) ##STR4## and (d) ##STR5## and a process for preparing said compounds. Said compounds have valuable fungicidal and miticidal activity.

Abstract: (2,2-Disubstituted vinyl)-.gamma.-butyrolactones of the formula: ##STR1## in which R.sub.1 and R.sub.2 are hydrogen or C.sub.1 -C.sub.6 alkyl, preferably methyl,R.sub.3 and R.sub.4 are hydrogen, C.sub.1 -C.sub.6 alkyl, preferably methyl, or halogen, or, together with the carbon atom to which they are attached, form a cycloalkyl group, andR.sub.5 is C.sub.1 -C.sub.6 alkyl,are prepared by condensing an epoxide of the formula: ##STR2## with a malonic acid ester of the formula: ##STR3## in a basic medium. The butyrolactones of formula I are valuable intermediates for the synthesis of synthetic pyrethroids having insecticidal activity.

Abstract: The invention provides novel fluoro-imides/amides of the formula: ##STR1## in which at least two of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are fluorine and any of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 which is not fluorine, is chlorine, and A is selected from: ##STR2## in which R.sub.1 is hydrogen or a halogen atom, preferably chlorine,Z is CH or a nitrogen atom,n is 0 or 1, andR is an alkyl group having 1-6 carbon atoms, preferably methyl, or a halogen atom, preferably chlorine; ##STR3## in which Z, n and R have the above-stated meanings: ##STR4## and a process for preparing said compounds. Said compounds have valuable fungicidal and miticidal activity.

Abstract: The invention provides novel fluoro-imides/amides of the formula: ##STR1## IN WHICH AT LEAST TWO OF X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are fluorine and any of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 which is not fluorine, is chlorine, and A is selected from:(a) ##STR2## IN WHICH R.sub.1 is hydrogen or a halogen atom, preferably chlorine, Z is CH or a nitrogen atom,N is 0 or 1, andR is an alkyl group having 1-6 carbon atoms, preferably methyl, or a halogen atom, preferably chlorine;(b) ##STR3## IN WHICH Z, n and R have the above-stated meanings: (C) ##STR4## (d) ##STR5## and a process for preparing said compounds. Said compounds have valuable fungicidal and miticidal activity.

Abstract: A three-step process for the production of chrysanthemic acid esters and their homologues of the formula: ##STR1## in which R.sub.1 and R.sub.2 are hydrogen or C.sub.1 -C.sub.6 alkyl,R.sub.3 and R.sub.4 are C.sub.1 -C.sub.6 alkyl or halogen or, together with the C atom to which they are attached, form a cycloalkyl group, andR.sub.5 is C.sub.1 -C.sub.6 alkyl,Which comprises:(1) decarboxylating a lactone of the formula: ##STR2## (2) treating the resulting decarboxylated lactone to effect ring cleavage, halogenation and esterification to form an ester of the formula: ##STR3## in which X is Cl, Br or I, and (3) TREATING THE ESTER X with a base to effect internal condensation whereby the desired product of formula I is obtained.The esters I are valuable intermediates for the preparation of synthetic pyrethroids having insecticidal activity.

Abstract: This invention is concerned with certain substituted 3-hydroxy- or 3-aminopyridines and their preparation and use. These compounds possess improved juvenile hormonal activity which can be utilized first and foremost to inhibit the metamorphosis of insect larvae and, consequently, can be utilized in the control of insects.

Abstract: This invention is concerned with certain terpenoid compounds of substituted hydroxy-alkylpyridines, and their preparation and use. These compounds possess improved juvenile hormonal activity which can be utilized first and foremost to inhibit the metamorphosis of insect larvae and to act as sterilizing or ovicidal agent and, consequently, can be utilized in the control of insects.

Abstract: This invention is concerned with certain alkyl, terpenoid and olefinic oximethers of some aryl, pyridyl and alifatie aldehydes and ketones, and their preparation and use. These compounds possess improved juvenile hormonal activity which can be utilized first and foremost to inhibit the metamosphosis of insert larvae and to act as sterilizing or ovicidal agent, consequently, can be utilized in the control of insects.