Utilization of 3,3-dichloro-2-fluoro-acrylic acid derivatives for pest control

摘要

The invention relates to the partially known 3,3-dichloro-2-fluoro-acrylic acid derivatives of formula (I), wherein A has the meanings mentioned in the description. Said substances are suitable for protecting plants against the attack of undesired microorganisms and for controlling animal pests. The substances of formula (I) are also suitable for enhancing the effectiveness of azole fungicides. The invention further relates to novel 3,3-dichloro-2-fluoro-acrylic acid derivatives of formula (Ia), wherein A<1> has the meanings mentioned in the description, and to a method for producing said novel substances.