Document Type and Number:
Japanese Patent JPS50140630
Kind Code:
A
Abstract:
1499418 Substituted dihydro-1,4-oxathiins UNIROYAL Inc and UNIROYAL Ltd 24 March 1975 [9 April 1974] 12099/75 Heading C2C Novel substituted dihydro-1,4-oxathiins of the formula wherein R 1 to R 10 are the same or different and are hydrogen, alkyl, alkoxy, halogen, amino, alkylthio or acyloxy and n is zero, 1 or 2, provided that when n is zero at least one R must be other than hydrogen, are prepared by reacting a 2-mercaptoalkanol with an appropriately substituted 2-halo-2-phenylacetophenone in the presence of a base and cyclizing the resulting intermediate with water removal in the presence of p-toluenesulphonic acid as a catalyst. The novel compounds possess herbicidal properties.
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Application Number:
JP4270975A
Publication Date:
November 11, 1975
Filing Date:
April 08, 1975
Export Citation:
International Classes:
A01P21/00; C07D327/06; A01N43/32; (IPC1-7): A01N5/00; A01N9/12; C07D327/06