A [2 + 2] Cycloaddition Route to Dimethylaminomethylene Vinamidinium Salts
摘要:
Trifluoropropanoic acid reacts with 1 equiv of POCI3 in DMF to generate the trifluoromethyl enamine (7). At this stage, two reaction manifolds are available. The expected reaction with additional POCI3 generates the 2-trifluoromethyl vinamidinium salt (3c). However, thermally driven loss of fluoride generates an iminium ion, which sets the stage for a [2 + 2] cycloaddition to ultimately generate the dimethylaminomethylene vinamidinium salt (1).
A [2 + 2] Cycloaddition Route to Dimethylaminomethylene Vinamidinium Salts
摘要:
Trifluoropropanoic acid reacts with 1 equiv of POCI3 in DMF to generate the trifluoromethyl enamine (7). At this stage, two reaction manifolds are available. The expected reaction with additional POCI3 generates the 2-trifluoromethyl vinamidinium salt (3c). However, thermally driven loss of fluoride generates an iminium ion, which sets the stage for a [2 + 2] cycloaddition to ultimately generate the dimethylaminomethylene vinamidinium salt (1).
The present application relates to the use of heterocyclic compounds, some of which are known, for controlling animal pests including arthropods and in particular insects, furthermore to novel heterocyclic compounds and to processes for their preparation.
NOVEL HETEROCYCLIC COMPOUNDS AS PEST CONTROL AGENTS
申请人:BAYER CROPSCIENCE AG
公开号:US20150284380A1
公开(公告)日:2015-10-08
The present invention relates to novel heterocyclic compounds, to processes for preparation thereof and to the use thereof for controlling animal pests, which also include arthropods and especially insects.