公开(公告)号：DE4142945A1

公开(公告)日：1993-07-01

申请号：DE4142945

申请日：1991-12-24

Applicant: BASF AG

Inventor： MUENSTER PETER DR ,  WALTER HELMUT DR ,  WESTPHALEN KARL-OTTO DR ,  GERBER MATTHIAS DR ,  KARDORFF UWE DR ,  STERNER OLOV DR ,  GUSTAFSSON JOERGEN DIPL CHEM

IPC: A01N35/02 ,  A01N55/00 ,  C07C45/64 ,  C07C47/445 ,  C07C47/46 ,  C07C47/47 ,  C07F7/18

Abstract: Control of undesired plant growth comprises treating undesired plants and/or their environment with a herbicidally effective amt. of cyclohehene-1-aldehyde (I). In (I), R1 = CHO, 1,3-dioxolan-2-yl or CH(OR10)2; R2, R3 = H, or 1-4C alkyl or R2 + R3 = -CH2-; R4 = H, 1-4C alkyl or R11; R5 = H; R6, R7 = H or 1-4C alkyl or R6 + R7 = propylene opt. mono, di- or trisubstd. by 1-4C alkyl; R8 = H, 1-4C alkyl or OH; R9 = H, or 1-8C alkyl; R10 = 1-4C alkyl; R11 = H or silyl protecting gp. New cpds. (Ia), i.e. cpds. (I) where R2, R3 and R5-R8 = H, R4 = OR11, R9 = H or 1-8C alkyl; R10 = 1-4C alkyl) are also claimed. Known cpds. (I) are described in Planta Med. 1991, 344-346 and J. Org. Chem 55, 3004-3005 (1990) (isovelleral, isoisovelleral and corresp. hydroxy cpds). J. Chem Soc. Perkin Trans 1, 1990, 1901-1908 (1,3-dimethyl-2-cyclohexane- 1,2-dicarboxaldehyde) and Synth. Commun. 1981, 627-633 (6,6-dimethyl-2-cyclohexene -1,2-dicarbaldehyde). USE - Cpds. (I) can be used as such or as herbicidal compsns. (formulated conventionally) for pre- or post-emergence control of undesired plants, e.g. Chinese hemp, amaranth pigweed and goosefoot, in a wide variety of crops, e.g. cereals, rice, coffee, hops, potatoes, tomatoes, sugar cane and tobacco. Application is at 0.001-5 pref. 0.01-2 kg (I)/ha.