Mitsui Toatsu Chemicals, Incorporated

Noboru Iida

Hitoshi Shimotori

Katsutoshi Ishikawa

Shuji Ozawa

Shunichi Inami

Yuji Yanase

Toshiaki Kuwatsuka

Junya Fujiwara

Takeshi Sekino

Kazuo Akihiro

Disclosed are dihalogenothiocyanopyrimidine derivatives of the general formula ##STR1## wherein X and Y are halogen atoms, a process for preparing such derivatives, as well as agricultural and horticultural fungicidal compositions containing such a derivative as active ingredient.

Dihalogen-substituted thiocyanopyrimidine derivatives, and agricultural

Disclosed herein are thiocyanopyrimidine derivatives represented by the following general formula: ##STR1## wherein R means an alkyl group having 1-3 carbon atoms and X denotes a halogen atom, their production process, and agricultural and horticultural fungicides containing same as active ingredients. The compounds of this invention can provide ideal agricultural and horticultural fungicides, since they exhibit outstanding fungicidal activities against plant pathogens led by late blight and downy mildew, their toxicity to animals are low and they are not phytotoxic. The compounds of this invention can be obtained by reacting pyrimidine derivatives represented by the following general formula: ##STR2## with thiocyanates while using an organic acid as a solvent. Good results can be obtained particularly when formic acid is used as a solvent.

Production process for thiocyanopyrimidine

Thiocyanopyrimidine, agricultural and horticultural fungicide containing

Disclosed herein are a novel compound, 5-methylthiopyrimidine derivative, notably that represented by the following general formula: ##STR1## wherein X means an oxygen or sulfur atom and R.sup.2 denotes a methyl, allyl or propargyl group, its preparation process and an agricultural and horticultural fungicide containing same as an active ingredient. The above compound exhibits outstanding control effects against plant diseases, especially, late blight of potatoes and the like and downly mildew. It permits preparation of an ideal agricultural and horticultural fungicide owing to its very low toxicity against mammal and fish and its no phytotoxicity.

5-Methylthiopyrimidine derivatives, their preparation process and

Growing community of inventors

Naka, Japan

Noboru Iida