Catalytic enantioselective synthesis of carboxy-substituted 2-isoxazolines by cascade oxa-Michael-cyclization
作者:Hyo-Jun Lee、Bora Eun、Eonseon Sung、Gil Tae Hwang、Young Kwan Ko、Chang-Woo Cho
DOI:10.1039/c7ob02722b
日期:——
phase-transfer-catalyzed enantioselectivecascade oxa-Michael-cyclization reaction of hydroxylamine with various β-carboxy-substituted α,β-unsaturated ketones has been achieved for the preparation of chiral carboxy-substituted 2-isoxazolines. This cascadereaction provided the desired products in good yields (up to 98%) with excellent enantioselectivities (91–96% ee). In addition, the cascadereaction was effectively
INDUSTRIAL METHOD FOR THE PREPARATON OF HIGH-PURITY METHIOZOLIN
申请人:Moghu Research Center Ltd.
公开号:US20150158852A1
公开(公告)日:2015-06-11
Provided is an industrial method for the preparation of [5-(2,6-difluorobenzyloxy)methyl}-4,5-dihydro-5-methyl-3-(3-methylthiophene-2-yl)-isoxazole](common name: methiozolin) represented by Formula 1 that is a herbicidal substance in high-purity.
[EN] METHOD FOR CONTROLLING HERBICIDE RESISTANT OR TOLERANT WEEDS<br/>[FR] PROCÉDÉ DE LUTTE CONTRE LES MAUVAISES HERBES RÉSISTANT OU TOLÉRANT AUX HERBICIDES
申请人:BASF SE
公开号:WO2019243101A1
公开(公告)日:2019-12-26
The present invention relates to methods and uses for controlling herbicide resistant or tolerant weed species by applying the compound (5/RS)-5-[(2,6-difluorobenzyloxy)methyl]-4,5-dihydro-5- methyl-3-(3-methyl-2-thienyl)-1,2-oxazole of the formula I any of its individual enantiomers or any non-racemic mixture thereof (herbicide A). The methods and uses are particularly suitable for the protection of crops. The invention also relates to herbicidal combinations comprising said herbicide A and a herbicide B which is different from herbicide A.