α-Monofluoroalkanoic acids are important intermediates in the synthesis of biologically active fluorine compounds. General methods of preparation have been examined, based on the three following reagents: (a) hydrogen fluoride + N-bromoacetamide; (b) diethyl monofluoromalonate; and (c) perchlorylfluoride. The first of these is the recommended procedure for simple unsubstituted α-fluoro acids; however, the
An Unusual Conformation of α-Haloamides Due to Cooperative Binding with Zincated Porphyrins
作者:Marina Tanasova、Qifei Yang、Courtney C. Olmsted、Chrysoula Vasileiou、Xiaoyong Li、Mercy Anyika、Babak Borhan
DOI:10.1002/ejoc.200900089
日期:2009.9
with a zinc porphyrin leads to an unprecedented conformation for the determination of the absolute stereochemistry of α-haloamides (α-halocarboxylic acids derivatized with 1,4-phenylenediamine) through the use of exciton-coupled circular dichroism (ECCD). With the use of chiral lactams, whose rotomeric contributions are minimized, both ECCD and NMR spectroscopy demonstrate that the porphyrin favors binding
[EN] DIAMINOTRIAZINE COMPOUNDS<br/>[FR] COMPOSÉS DE DIAMINOTRIAZINE
申请人:BASF SE
公开号:WO2020058009A1
公开(公告)日:2020-03-26
The present invention relates to diaminotriazine compounds and to their use as herbicides. It also relates to agrochemical compositions for crop protection and to a method for controlling unwanted vegetation.