Patent ID: 8383661

Claim:
A heterocyclic compound of formula (I): wherein: X is a halogen selected from the group consisting of chlorine, bromine and iodine; Y is selected from the group consisting of oxygen, sulphur and NR 5 ; R 5 is (C 1 -C 9 )aliphatic, (C 3 -C 9 )alicyclic, (C 3 -C 9 )heterocyclic, phenyl, aryl, or heteroaryl carrying up to three substituents selected from the group consisting of halogen, nitro group, and (C 1 -C 3 )alkoxy; E is selected from the group consisting of oxygen and sulphur; R is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, (C 4 -C 9 )aliphatic alkyl, (C 3 -C 9 )alicyclic alkyl, and 1-haloethyl(—CHX—CH 3 ) only when E is oxygen, aryl, heteroaryl, aryl(C 1 -C 3 )alkyl, heteroaryl(C 1 -C 3 )alkyl, (C 1 -C 9 )aliphatic alkyloxy, (C 3 -C 9 )alicyclic alkyloxy, aryloxy, heteroaryloxy, aryl(C 1 -C 3 )alkyloxy, heteroaryl(C 1 -C 3 )alkyloxy, (C 1 -C 9 )aliphatic alkylthio, (C 3 -C 9 )alicyclic alkylthio, arylthio, heteroarylthio, aryl(C 1 -C 3 )alkylthio, and heteroaryl(C 1 -C 3 )alkylthio; R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of hydrogen, methyl, ethyl, (C 3 -C 9 )aliphatic alkyl, (C 3 -C 9 )alicyclic alkyl, heteroaryl, heteroaryl(C 1 -C 3 )alkyl, aryl, and aryl(C 1 -C 3 )alkyl, optionally mutually combined to form an o-phenylene structure with the 1,3 imidazolidine ring, such as a benzo[d]-2,3-dihydro-1H-imidazole structure, and, such that when R 1 is coupled to R 2 and R 3 is coupled to R 4 , they mutually combine to form an alkylene group or a cyclic spiro structure, such as ligands of heterocyclo 1,3-imidazolidine.