Compounds of formula I wherein n is 0, 1, 2, 3 or 4; R 1 is C 1-6 -alkyl-, halogen, HO-, C 1-6 -alkyl-O-, H 2 N-, C 1-6 -alkyl-HN-, (C 1-6 -alkyl) 2 N-, C 1-6 -alkyl-C HN-; R 2 is H, halogen or selected from the group consisting of • C 1-6 -alkyl-, C 2-6 -alkenyl-, C 2-6 -alkinyl-, C 3-6 -cycloalkyl- or C 3-6 -cycloalkenyl- each optionally substituted independently from each other with one, two, three or four R 2.1; • a monocyclic C 5.7 -heterocyclyl-, wherein one or two carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a bicyclic C 8-10 -heterocyclyl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a C 5-10 -heteroaryl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is aromatic, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl-, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl- C-HN-, optionally substituted independently from each other with one, two, three or four R 2.1; R 2.1 is halogen, C 1-6 -alkyl-, C 3-6 -cycloalkyl-, HO-, O=, C 1-6 -alkyl-O-, C 1-6 -alkyl- C-, C 1-6 -alkyl-O C-, C 1-6 -alkyl-HN-, (C 1-6 -alkyl) 2 N-, C 1-6 -alkyl-S-, C 1-6 -alkyl- S-, C 1-6 -alkyl- 2 S-, C 1-6 -alkyl- 2 SO-, (C 1-6 -alkyl) 2 N C-, C 1-6 -alkyl-HN C-, C 1-6 -alkyl- CHN-, C 1-6 -alkyl- C(C 1-6 -alkyl)N-, C 3-6 -cycloalkyl-HN-, C 3-6 -cycloalkyl- C-, HO-C 1-6 -alkyl-, MeO-C 1-6 -alkyl-, NC-, (C 1-6 -alkyl) 2 N 2 S-, C 1-6 -alkyl-HN 2 S-, (C 1-6 -alkyl) 2 C- or R 2.1.1 -, R 2.1.1 -C 1-6 -alkyl-O C-, R 2.1.1 -C 1-6 -alkyl; R 2.1.1 is phenyl-, pyridinyl-, C 3-6 -cycloalkyl-, each optionally substituted with one, two or three halogen, HO-, NC-, C 1-6 -alkyl-, C 1-6 -alkyl-O-; or a salt or solvates thereof. n is 0, 1, 2, 3 or 4; R 1 is C 1-6 -alkyl-, halogen, HO-, C 1-6 -alkyl-O-, H 2 N-, C 1-6 -alkyl-HN-, (C 1-6 -alkyl) 2 N-, C 1-6 -alkyl-C HN-; R 2 is H, halogen or selected from the group consisting of • C 1-6 -alkyl-, C 2-6 -alkenyl-, C 2-6 -alkinyl-, C 3-6 -cycloalkyl- or C 3-6 -cycloalkenyl- each optionally substituted independently from each other with one, two, three or four R 2.1; • a monocyclic C 5.7 -heterocyclyl-, wherein one or two carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a bicyclic C 8-10 -heterocyclyl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a C 5-10 -heteroaryl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is aromatic, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl-, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl- C-HN-, optionally substituted independently from each other with one, two, three or four R 2.1; • C 1-6 -alkyl-, C 2-6 -alkenyl-, C 2-6 -alkinyl-, C 3-6 -cycloalkyl- or C 3-6 -cycloalkenyl- each optionally substituted independently from each other with one, two, three or four R 2.1; • a monocyclic C 5.7 -heterocyclyl-, wherein one or two carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a bicyclic C 8-10 -heterocyclyl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is fully or partially saturated, optionally substituted independently from each other with one, two, three or four R 2.1; • a C 5-10 -heteroaryl-, wherein one, two, three or four carbon atoms are replaced by heteroatoms selected from -S-, -S -, -S 2 -, -O- or -N- and the ring is aromatic, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl-, optionally substituted independently from each other with one, two, three or four R 2.1; • aryl- C-HN-, optionally substituted independently from each other with one, two, three or four R 2.1; R 2.1 is halogen, C 1-6 -alkyl-, C 3-6 -cycloalkyl-, HO-, O=, C 1-6 -alkyl-O-, C 1-6 -alkyl- C-, C 1-6 -alkyl-O C-, C 1-6 -alkyl-HN-, (C 1-6 -alkyl) 2 N-, C 1-6 -alkyl-S-, C 1-6 -alkyl- S-, C 1-6 -alkyl- 2 S-, C 1-6 -alkyl- 2 SO-, (C 1-6 -alkyl) 2 N C-, C 1-6 -alkyl-HN C-, C 1-6 -alkyl- CHN-, C 1-6 -alkyl- C(C 1-6 -alkyl)N-, C 3-6 -cycloalkyl-HN-, C 3-6 -cycloalkyl- C-, HO-C 1-6 -alkyl-, MeO-C 1-6 -alkyl-, NC-, (C 1-6 -alkyl) 2 N 2 S-, C 1-6 -alkyl-HN 2 S-, (C 1-6 -alkyl) 2 C- or R 2.1.1 -, R 2.1.1 -C 1-6 -alkyl-O C-, R 2.1.1 -C 1-6 -alkyl; R 2.1.1 is phenyl-, pyridinyl-, C 3-6 -cycloalkyl-, each optionally substituted with one, two or three halogen, HO-, NC-, C 1-6 -alkyl-, C 1-6 -alkyl-O-;