期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 43, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2021.127960
关键词
Dinitration structure; Neonicotinoid; Synthesis; Insecticidal activity; Imidacloprid
资金
- National Key Research and Development Program of China [2017YFD0200500]
- Innovation Program of Shanghai Municipal Education Commission [2017-01-0700-02-E00037]
A serendipitous reaction of introducing nitro group from nitromethylene was observed in the studies on dihydroxy intermediate synthesis. Dinitration structures with nitromethylene analogues were prepared under mild conditions by using a metal-free catalyst B(OH)3, instead of expected dihydroxy compounds. The extra nitro group was suggested to be from starting material.
In the studies on dihydroxy intermediate synthesis, a serendipitous reaction of introducing nitro group from nitromethylene has been observed. Instead of expected dihydroxy compounds, dinitration structures with nitromethylene analogues were prepared under mild conditions by using a metal-free catalyst B(OH)3. In this reaction, the extra nitro group was suggested to be from starting material. Bioassays indicated that compound 3a showed good insecticidal activities against cowpea aphid (Aphis craccivora) and armyworm (Mythimna separata), with LC50 values were 4.9 mg/L and 7.1 mg/L, respectively.
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