Patent ID: 8729272

Claim:
A process for the preparation of a compound of formula (I) comprising either step (ii) together with (iii-1) or (iii-2); or comprising step (iv): (ii) reacting a compound of formula (IIIa) with sulfur, in order to obtain a compound of formula (IIa) and (iii-1)protonating said compound of formula (IIa), in order to obtain compounds of formula (I), wherein Y is hydrogen; or (iii-2) reacting said compound of formula (IIa) with an electrophilic compound Y 1 -LG in order to obtain compounds of formula (I), wherein Y is Y 1 , wherein Y 1 is (C 1 -C 8 )-alkyl, (C 1 -C 8 )-haloalkyl, (C 2 -C 8 )-alkenyl, (C 2 -C 8 )-haloalkenyl, (C 2 -C 8 )-alkynyl, (C 2 -C 8 )-haloalkynyl, C(═S)R 9 , SO 2 R 10 or CN; wherein R 9 and R 10 are as defined below; and LG is a leaving group; or (iv) reacting a compound of formula (IIIa) with an electrophile selected from (VI) a disulfide R 2 —S—S—R 2 , in order to obtain a compound of formula (I), wherein Y is R 2 ; (VII) R 3 —S—SO 2 —R 3 , in order to obtain a compound of formula (I), wherein Y is R 3 ; or (VIII) R 4 —S-Hal, wherein Hal is halogen, in order to obtain a compound of formula (I), wherein Y is R 4 ; wherein R is an organic group; Q is R 1 or X, wherein X is halogen; and Y is hydrogen, halogen, (C 1 -C 8 )-alkyl, (C 1 -C 8 )-haloalkyl, (C 2 -C 8 )-alkenyl, (C 2 -C 8 )-haloalkenyl, (C 2 -C 8 )-alkynyl, (C 2 -C 8 )-haloalkynyl, (C 6 -C 10 )-aryl, a five-, six-, seven-, eight-, nine- or ten-membered aromatic heterocycle that contains one, two, three or four heteroatoms selected from the group consisting of O, N and S, C(═S)R 9 , SO 2 R 10 or CN; wherein R 9 is NA 3 A 4 ; wherein A 3 ,A 4 independently of one another are hydrogen, C 1 -C 8 -alkyl, C 1 -C 8 -haloalkyl, C 2 -C 8 -alkenyl, C 2 -C 8 -haloalkenyl, C 2 -C 8 -alkynyl, C 2 -C 8 -haloalkynyl, C 3 -C 8 -cycloalkyl, C 3 -C 8 -halocycloalkyl, C 3 -C 8 -cycloalkenyl, C 3 -C 8 -halocycloalkenyl, (C 6 -C 10 )-aryl, a five-, six-, seven-, eight-, nine- or ten-membered aromatic heterocycle that contains one, two, three or four heteroatoms from the group consisting of O, N and S; R 10 is (C 1 -C 8 )-alkyl, phenyl-(C 1 -C 8 )-alkyl or phenyl, where the phenyl groups are in each case unsubstituted or substituted by one, two or three groups independently selected from the group consisting of halogen and (C 1 -C 4 )-alkyl; R 2 , R 3 are independently from another (C 1 -C 8 )-alkyl, (C 1 -C 8 )-haloalkyl, (C 2 -C 8 )-alkenyl, (C 2 -C 8 )-haloalkenyl, (C 2 -C 8 )-alkynyl, (C 2 -C 8 )-haloalkynyl, (C 6 -C 10 )-aryl, a five-, six-, seven-, eight-, nine- or ten-membered aromatic heterocycle that contains one, two, three or four heteroatoms from the group consisting of O, N and S, C(═S)R 9 or CN; and R 4 is halogen, (C 1 -C 8 )-alkyl, (C 1 -C 8 )-haloalkyl, (C 2 -C 8 )-alkenyl, (C 2 -C 8 )-haloalkenyl, (C 2 -C 8 )-alkynyl, (C 2 -C 8 )-haloalkynyl, (C 6 -C 10 )-aryl or a five-, six-, seven-, eight-, nine- or ten-membered aromatic heterocycle that contains one, two, three or four heteroatoms from the group consisting of O, N and S, or CN.