Shell Oil Comapny

Barry R Devlin

Robert J Searle

Janet A Day

Ronald F Mason

Ian D Entwistle

Peter J Williams

3-Carboxyazetidine or a hydrate, salt or lower alkyl ester thereof is used to sterilize male parts of plants.

Method for sterilizing male parts of plants

3-Substituted-2-carboxyazetidines, their esters and salts are used to sterilize male parts in plants.

3-Azabicyclo(3.1.0)hexane-2-carboxylic acid, a plant gametocide, is prepared by effecting reaction between cis 2-aminomethylcyclopropyl-1,1-dimethyl acetal and a cyanide in the presence of a liquid lower-alkanecarboxylic acid; treating the resulting N-alkanoyl-3-azabicyclo(2.1.0)hexane-2-carbonitrile with a strong acid; treating the resulting 3-alkanoyl-3-azabicyclo(3.1.0)hexane-2-carboxylic acid with strong acid to form the desired 3-azabicyclo(3.1.0)hexane-2-carboxylic acid.

Process for preparing 3-azabicyclo(3.1.0)hexane-2-carboxylic acid

3-azabicyclo(3.1.0)hexane-2-carboxylic acid, a plant gametocide, is prepared by effecting reaction between cis 2-aminomethylcyclopropyl-1,1-dimethyl acetal and a cyanide in the presence of a liquid lower-alkanecarboxylic acid; treating the resulting N-alkanoyl-3-azabicyclo(2.1.0)hexane-2-carbonitrile with a strong acid; treating the resulting 3-alkanoyl-3-azabicyclo(3.1.0)hexane-2-carboxylic acid with strong acid to form the desired 3-azabicyclo(3.1.0)hexane-2-carboxylic acid.

2-Aminomethylcyclopropyl-1,1-dialkylacetals

Certain 3-azabicyclo(3.1.0)hexane-2-carbonitriles, and a method for their preparation.

3-Azabicyclo(3.1.0)hexane-2-carbonitrile

3-Azabicyclo(3.1.0)hexan-4-one-2-carbonitriles, and a method for their synthesis.

3-Azabicyclo(3.1.0)hexan-4-one-2-carbonitrile

Novel 1H-indazole-4,7-diones, benzo(d)isoxazole-4,7-diones, benzo(d)triazole-4,7-diones, and benzimidazole-4,7-diones substituted in the 5- and 6- positions, are used for the control of weeds.

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Sittingbourne, United Kingdom

Barry R Devlin