Abstract: The subject is to provides a process for producing 1-substituted-hydantoins of Formula I: ##STR1## wherein R.sub.1 represents d hydrocarbon group which may be substituted and others,cheracterized by reacting N-sustituted-N-alkcycarbonylamnilo-acetonitrile of Formula II: ##STR2## wherein R.sub.2 represents an alkyl group and others, with an alkali metal hydroxides or the like and then treating with an acid.

Abstract: There is disclosed a dihalopropene compound of the formula I: ##STR1## wherein l is an integer of 1 to 5; m is an integer of 1 to 4; R.sup.1 's and R.sup.2 's are the same or different and are independently halogen or various other groups; D is oxygen; X's are the same or different and are independently chlorine or bromine; Y is oxygen; Z, P and Q are the same or different and are independently nitrogen or CH, provided that P and Q are not simultaneously nitrogen, and when Y is sulfur, Z is CH. Also disclosed is an insecticide/acaricide comprising the dihalopropene compound as an active ingredient. The dihalopropene compound exhibits excellent insecticidal/acaricidal action. Further disclosed is an intermediate compound for use in the production of the dihalopropene compound.

Abstract: There is disclosed a process of producing a 2-iminothiazoline derivative of the general formula ?II!, characterized in that a thiourea derivative of the general formula ?I! is treated with an acid. Also disclosed are a process of producing an N-substituted N-arylcyanamide derivative of the general formula ?VI!, characterized in that an N-arylcyanamide derivative of the general formula ?IV! is reacted with an allyl halide derivative of the general formula ?V! in an aprotic polar solvent in the presence of an iodide and an alkali metal carbonate; and a process of producing an N-substituted N-arylthiourea derivative of the general formula ?VII!, characterized in that an N-substituted N-arylcyanamide derivative of the general formula ?VI! obtained as described above is further reacted with a chemical species which generates sulfide ion or hydrogensulfide ion.

Abstract: There is disclosed a process of producing a 2-iminothiazoline derivative of the general formula [II], characterized in that a thiourea derivative of the general formula [I] is treated with an acid. Also disclosed are a process of producing an N-substituted N-arylcyanamide derivative of the general formula [VI], characterized in that an N-arylcyanamide derivative of the general formula [IV] is reacted with an allyl halide derivative of the general formula [V] in an aprotic polar solvent in the presence of an iodide and an alkali metal carbonate; and a process of producing an N-substituted N-arylthiourea derivative of the general formula [VII], characterized in that an N-substituted N-arylcyanamide derivative of the general formula [VI] obtained as described above is further reacted with a chemical species which generates sulfide ion or hydrogensulfide ion.

Abstract: There is disclosed a dihalopropene compound of the formula I: ##STR1## wherein l is an integer of 1 to 5; m is an integer of 1 to 4; R.sup.1 's and R.sup.2 's are the same or different and are independently halogen or various other groups; D is oxygen; X's are the same or different and are independently chlorine or bromine; Y is oxygen; Z, P and Q are the same or different and are independently nitrogen or CH, provided that P and Q are not simultaneously nitrogen, and when Y is sulfur, Z is CH. Also disclosed is an insecticide/acaricide comprising the dihalopropene compound as an active ingredient. The dihalopropene compound exhibits excellent insecticidal/acaricidal action. Further disclosed is an intermediate compound for use in the production of the dihalopropene compound.

Abstract: There is disclosed a process of producing a 2-iminothiazoline derivative of the general formula [II], characterized in that a thiourea derivative of the general formula [I] is treated with an acid. Also disclosed are a process of producing an N-substituted N-arylcyanamide derivative of the general formula [VI], characterized in that an N-arylcyanamide derivative of the general formula [IV] is reacted with an allyl halide derivative of the general formula [V] in an aprotic polar solvent in the presence of an iodide and an alkali metal carbonate; and a process of producing an N-substituted N-arylthiourea derivative of the general formula [VII], characterized in that an N-substituted N-arylcyanamide derivative of the general formula [VI] obtained as described above is further reacted with a chemical species which generates sulfide ion or hydrogensulfide ion.