The present invention provides compounds of formula (I) wherein R1, R2, A, X, D1, D2 and Y3 are as defined in the claims. The invention further provides intermediates used in the preparation of these compounds, to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
The present invention provides compounds of formula (I) wherein A1, A2, R1, D1, D2, Y3 and X are as defined in the claims. The invention further relates to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
The invention relates to compounds of formula (I), wherein R1, R2, X, Y1, Y2, Y3, D1, D2, D3, G1, G2, G3 and p are as defined in the claims. The invention further provides intermediates used in the preparation of these compounds, to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
The invention relates to compounds of formula I
wherein R1, R2, X, Y1, Y2, Y3, D1, D2, D3, G1, G2, G3 and p are as defined in the claims. The invention further provides intermediates used in the preparation of these compounds, to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
Studies on pyrimidine derivatives. XXV. Reaction of pyrimidinyl aldehydes and ketones with wittig reagents.
作者:TAKAO SAKAMOTO、KENICHI TANJI、HIROSHI YAMANAKA
DOI:10.1248/cpb.30.610
日期:——
The reaction of 2-and 4-pyrimidinecarbaldehydes with reagents such as ethoxycarbonyl-(1) and benzoyl-(triphenylphosphino) methanide (2) gave pyrimidines with an α, β-unsaturated carbonyl group. The reagents (1, 2) reacted with 2- and 4-acetylpyrimidines to give similar products, as expected. 4-(1-Chloroethyl) pyrimidines did not react with triphenylphosphine, though chloro-methylpyrimidines are know to give Wittig reagents.