Patent GB-1397450-A (GB)
Title: Plant growth regulators
IPC: F24F7/00
Filed: 1972-06-16
Abstract: 1397450 Plant growth regulation using ethanesulphinic acid and ethanesulphinamide derivatives SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 16 June 1972 [14 July 1971 (2)] 28304/72 Heading C1B [Also in Division C2] A plant growth regulant composition comprises a compound of formula wherein X represents chlorine, bromine, iodine, hydroxy, alkoxy of up to 3 carbon atoms, aryloxy of up to 10 carbon atoms, alkylthio of up to 3 carbon atoms, aralkoxy of up to 10 carbon atoms, acyloxy of up to 4 carbon atoms, alkylsulphonyloxy wherein the alkyl group contains up to 3 carbon atoms, arylsulphonyloxy, nitro, monoalkylamino or dialkylamino wherein each alkyl group contains up to 6 carbon atoms, or A<SP>1</SP>R<SP>1</SP> wherein A<SP>1</SP> is oxygen and R<SP>1</SP> is 2-(dimethylcarbamoyl) - 1 - methylvinyl, 2 - (methylcarbamoyl) - 1 - methylvinyl or 2 - (methoxycarbonyl) - 1 - methylvinyl; and either A represents the group -Y-R wherein Y is oxygen or sulphur with the proviso that when Y is oxygen R is alkyl of up to 20 carbon atoms, aryl of up to 10 carbon atoms, aralkyl of up to 10 carbon atoms, alkenyl of up to 8 carbon atoms, alkynyl of up to 4 carbon atoms, 2- (dimethylcarbamoyl) - 1 - methylvinyl, 2- methylcarbamoyl) - 1 - methylvinyl, 2 - (methoxycarbonyl) - 1 - methylvinyl or ZR<SP>2</SP> wherein Z is alkylene of up to 4 carbon atoms and R<SP>2</SP> is alkylthio of up to 3 carbon atoms, alkoxy of up to 4 carbon atoms, aralkoxy of up to 10 carbon atoms, hydroxy, or a beta substituted ethanesulphinyloxy moiety wherein the beta substituent is identical to the beta substituent represented by X in Formula I above; and when Y is sulphur R is alkyl of up to 8 carbon atoms optionally substituted with chlorine or bromine, or aralkyl wherein the alkyl group contains up to 4 carbon atoms ; and R may also represent hydrogen, if Y is oxygen and X is any of the moieties represented by X above except A<SP>1</SP>R<SP>1</SP>; or A represents the group wherein R<SP>3</SP> and R<SP>4</SP> may be the same or different and each represents hydrogen, alkyl of up to 20 carbon atoms or aralkyl of up to 10 carbon atoms; either or both of R<SP>3</SP> and R<SP>4</SP> may be R<SP>5</SP>Y<SP>1</SP> wherein R<SP>5</SP> is alkylene of up to 4 carbon atoms and Y<SP>1</SP> is hydroxy or betahaloethanesulphinyloxy wherein the beta halogen substituent is chlorine, bromine or iodine with the proviso that when Y<SP>1</SP> is hydroxy X represents any of the moieties described for X above except A<SP>1</SP>R<SP>1</SP> and when Y<SP>1</SP> is a betahaloethanesulphinyloxy X is chlorine, bromine or iodine; if R<SP>3</SP> is hydrogen R<SP>4</SP> may also represent aryl of up to 10 carbon atoms, alkenyl of up to 8 carbon atoms, cycloalkyl of up to 8 carbon atoms, alkoxy of up to 4 carbon atoms, a substituted phenyl of the formula (wherein Z<SP>1</SP> is alkyl of up to 3 carbon atoms, alkylthio of up to 3 carbon atoms, alkoxy of up to 3 carbon atoms, alkylsulphonyl of up to 3 carbon atoms, chlorine, bromine, nitro, trifluoromethyl or R<SP>5</SP>Y<SP>2</SP> (wherein R<SP>5</SP> is as described above and Y<SP>2</SP> is alkylthio of up to 3 carbonatoms; and if R<SP>3</SP> is hydrogen, alkyl or aryl R<SP>4</SP> may also represent hydroxy or alkoxy of up to 4 carbon atoms, together with an adjuvant.