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(11)

EP 4 232 434 A1

(12)

(43) Date of publication: 30.08.2023 Bulletin 2023/35 (21) Application number: 20855888.2 (22) Date of filing: 26.10.2020

(51) International Patent Classification (IPC):  C07D 221/20(2006.01) C07D 237/26(2006.01) C07C 221/00(2006.01) H05B 33/14(2006.01) C07D 221/18(2006.01) C07C 47/00(2006.01) C09K 11/06(2006.01) (52) Cooperative Patent Classification (CPC): C07D 221/20; C07D 237/26; C07D 221/18; C09K 11/06; C07C 255/36 (86) International application number: PCT/IB2020/060023 (87) International publication number: WO 2022/090762 (05.05.2022 Gazette 2022/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Rossi Besio, Andrea 20144 Milano (MI) (IT)	(72) Inventor: Rossi Besio, Andrea 20144 Milano (MI) (IT) (74) Representative: Metroconsult Srl  Via Palestro 5/2 16122 Genova 16122 Genova (IT)