Herbicides derived from 2-cyano-1,3-diones have the formula: ##STR1## wherein R, R.sup.1, R.sup.2 R.sup.3, R.sup.4 and R.sup.5 are as defined in the description. The compounds are intended for use pre- and post-emergence as selective herbicides in maize and a large number of other monocotyledon crops.
Metal-free direct C(sp3)−H functionalization of 2-alkylthiobenzoic acid to access 1,3-benzooxathiin-4-one
作者:Ke Yang、Yi Li、Mengjie Song、Shengfei Dai、Zheng-Yi Li、Xiaoqiang Sun
DOI:10.1016/j.cclet.2020.11.036
日期:2021.1
Abstract Metal-free direct α-C(sp3)–H intramolecular cyclization of 2-alkylthiobenzoic acid in the presence of Selectfluor is described. This novel strategy provides a facile and efficient method to access important 1,3-benzooxathiin-4-one derivatives with good functional groups tolerance and yields.
Benzisothiazol-3-ones through a Metal-Free Intramolecular N-S Bond Formation
作者:Ke Yang、Hao Zhang、Ben Niu、Tiandi Tang、Haibo Ge
DOI:10.1002/ejoc.201801090
日期:2018.11.1
An efficient selectfluor‐promoted synthesis of benzoisothiazol‐3‐ones through a sequential N–S bondformation and C–S bond cleavage process was developed.
Intermediates to herbicidal 4-substituted isoxazoles
申请人:Rhone-Poulenc Agriculture Ltd.
公开号:US05650533A1
公开(公告)日:1997-07-22
The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meaning defined in the description which possess valuable herbicidal properties.
The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meanings defined in the description, which possess valuable herbicidal properties.