The invention relates to novel iodophenyl-substituted cyclic ketenols of the formula (I)
in which CKE, J, X and Y are as defined above, to a plurality of processes and intermediates for their preparation and to their use as pesticides and/or herbicides, and also to selective herbicidal compositions comprising firstly iodophenyl-substituted cyclic ketonols of the formula (I) and secondly at least one crop plant compatibility-improving compound.
US8629084B2
申请人:——
公开号:US8629084B2
公开(公告)日:2014-01-14
Synthesis of tetronic acids from propargylic alcohols and CO<sub>2</sub>
practical synthesis of important tetronicacidsfrom easily available propargylic alcohols and carbon dioxide is reported for the first time. This transition-metal-free transformation features high atom- and step-economy, mild reaction conditions, good functional group tolerance and high yield. Preliminary mechanistic studies suggest that the reaction proceeds via cyclization to give alkylidene cyclic carbonate