期刊
CHIMIA
卷 69, 期 7-8, 页码 425-434出版社
SWISS CHEMICAL SOC
DOI: 10.2533/chimia.2015.425
关键词
o-Biscyclopropylaniline; Isopyrazam; SDHI; Sedaxane; Solatenol (TM)
Sedaxane (SDX) 1, isopyrazam (IZM) 2 and Solatenol (TM) (STL) 3 are broad-spectrum pyrazole carboxamides, which originate from novel chemical classes of fungicides. Their mode of action (MoA) is inhibition of succinate dehydrogenase (SDH), which was recognized for a long time to deliver only compounds with a narrow biological spectrum. This view changed with the market introduction of BASF's boscalid in 2003.([2]) All major agro-companies subsequently worked in parallel on this MoA successfully and recently introduced new compounds to the market. Syngenta entered the SDH I area in 1998 and was able to introduce three complementary compounds to the market between 2010 and 2012. In this short review some synthesis challenges and biological effects of SDX 1, IZM 2 and STL 3 will be covered. New cost-efficient synthesis strategies for the preparation of o-biscyclopropyl-aniline, new benzonorbornene intermediates and the key pyrazole carboxylic acid intermediate which is essential for all three Syngenta SDHIs, will be in the focus of this review
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