| abstract |
The invention relates to a process for the preparation of a dicyanopyrazine compound of the formula wherein R1, R2 and R3 are each hydrogen, lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl, aralkyl, substituted aralkyl or thienylmethyl, with the proviso that R1, R2 and R3 are not simultaneously Are hydrogen, which comprises reacting a compound of formula (II) with a compound of formula (III). The erfindunsgemaesz prepared compounds are useful as fungicides in horticulture or agriculture. Formula (I) {method; manufacture; Dicyanopyrazine compounds; fungicides; Horticulture; Agriculture} |