Factors affecting the stability and equilibria of free radicals. XIII. N-alkoxy- and N-aralkoxypicrylamines and ESR spectra of the corresponding capto-dative persistent aminyls
Radical C(sp<sup>3</sup>)–H Heck-type Reaction of <i>N</i>-Alkoxybenzimidoyl Chlorides with Styrenes to Construct Alkenols
作者:Di Fang、Yidan Zhang、Yiyun Chen
DOI:10.1021/acs.orglett.2c00593
日期:2022.3.18
the first radical C(sp3)–H Heck-type reaction of aliphaticalcohols for selective δ- and ε-alkenol synthesis by photoredox catalysis. N-Alkoxybenzimidoyl chlorides are developed as novel alkoxyl radical precursors with tunable redox potentials. Various alkenols can be constructed by the inert C(sp3)–H Heck-type reaction of 4-cyano-N-alkoxybenzimidoyl chlorides with styrene derivatives under redox-neutral
CONTROLLED RELEASE OF ACTIVE COMPOUNDS FROM DYNAMIC MIXTURES
申请人:Herrmann Andreas
公开号:US20100226875A1
公开(公告)日:2010-09-09
The present invention relates to a dynamic mixture in the form of a dynamic mixture obtained by reacting together, in the presence of water, at least one O-substituted hydroxylamine or S-substituted thiohydroxylamine derivative with at least one perfuming, flavoring, insect repellent or attractant, bactericide or fungicide aldehyde or ketone. This mixture is capable of releasing in a controlled and prolonged manner the aldehyde or ketone into the surrounding environment. Furthermore, the present invention concerns also the use of these dynamic mixtures as perfuming ingredients as well as the perfuming compositions or perfumed articles that include these mixtures.
We synthesized azo dye- and fluorescence-labeled cis-cinnamic acid analogues possessing inhibitory activity agaihst lettuce root growth and a trans-isomer without bioactivity as a control probe. The radicles incubated with the azo dye-labeled analogue were stained red, with their tips especially deeply dyed. The fluorescent images of the radicles incubated with each of these molecular probes depicted that the root cap was fluorescence-stained. However, images of the control radicles prepared by staining with the trans-isomer fluorescent probe did not show emission at the root cap. These contrasts suggest specific localization of the cis-cinnamate analogue at the columella cells. (C) 2016 Elsevier Ltd. All rights reserved.