2-ALKYNYL-6-PYRIDIN-2-YL-PYRIDAZINONES, 2-ALKYNYL-6-PYRIDIN-2-YL-DIHYDROPYRIDAZINONES, 2-ALKYNYL-6-PYRIMIDIN-2-YL-PYRIDAZINONES AND 2-ALKYNYL-6-PYRIMIDIN-2-YL-DIHYDROPYRIDAZINONES AND THEIR USE AS FUNGICIDES

摘要

This invention relates to certain novel 2-alkynyl-6-pyridin-2-yl-pyridazinones, 2-alkynyl-6-pyridin-2-yl-dihydropyridazinones, 2-alkynyl-6-pyrimidin-2-y1-pyridazinones and 2-alkynyl-6-pyrimidin-2-yl-dihydropyridazinones and to the use of these compounds for control of fungal pathogens of plants and mammals.