[EN] 3'-KETOGLYCOSIDE COMPOUND FOR THE SLOW RELEASE OF A VOLATILE ALCOHOL<br/>[FR] COMPOSÉ 3'-CÉTOGLYCOSIDE POUR LA LIBÉRATION LENTE D'UN ALCOOL VOLATIL
申请人:GLYCOSCIENCE S L
公开号:WO2021160670A1
公开(公告)日:2021-08-19
The present invention relates to a 3'-ketoglycoside compound defined by formula (I) and its use for controlled release of alcohols, in particular alcohols showing an insect repellent effect. It relates also to a process for preparing the 3'-ketoglycoside compound of formula (I). It further relates to a composition comprising a 3'- ketoglycoside compound of formula (I). It relates also to the use of a 3'-ketoglycoside compound of formula (I) for the controlled release of alcohols. It related also to a method of use of such composition.
Photoinduced Fragmentation Borylation of Cyclic Alcohols and Hemiacetals
作者:Chao Shu、Rudrakshula Madhavachary、Adam Noble、Varinder K. Aggarwal
DOI:10.1021/acs.orglett.0c02513
日期:2020.9.18
conveniently prepared by radical-mediated ring opening of cyclic alcohols and hemiacetals, respectively. The reactions proceed under mild conditions in the absence of additives or photocatalysts, display excellent functional group tolerance, and are shown to allow cleavage of 4-, 5-, 6-, and 7-membered ring substrates. The mechanism proceeds via sequential homolytic N–O and C–C bond cleavages, the latter
Iron-Catalyzed Decarboxylative Olefination of Unstrained Carbon–Carbon Bonds Relying on Alkoxyl Radical Induced Cascade
作者:Pin Gao、Hao Wu、Jun-Cheng Yang、Li−Na Guo
DOI:10.1021/acs.orglett.9b02675
日期:2019.9.6
An iron-catalyzed decarboxylative olefination of unstrained carbon-carbon bonds via alkoxylradical induced C-C bond cleavage is presented. This protocol features mild conditions (room temperature, redox-neutral), good substrate scope and functional group compatibility, as well as excellent stereoselectivity, thus providing a facile access to the distal alkenyl ketones.
We present a new class of solubilizing groups for conjugated polymers that enable solution processing of multilayer devices. Conjugated polymers in organic devices are sometimes difficult to process, because of their limited solubility. Well-soluble polymers decorated with alkyl side chains, however, introduce new challenges for thin-film deposition. Using the same solvent for multiple layers can dissolve the already applied layers. In this work, we introduce a new class of thermo-labile groups, which reduce the solubility of conjugated polymers after thermal treatment. Following a very modular approach, we can tune the temperature of the thermo-cleavage between 140 °C and 200 °C. This enables the fabrication of organic solar cells and field-effect transistors (FETs) with robust, solvent-resistant active layers.
我们提出了一类新的共轭聚合物增溶基团,可用于多层器件的溶液加工。有机器件中的共轭聚合物有时很难加工,因为它们的溶解度有限。然而,用烷基侧链装饰的易溶聚合物为薄膜沉积带来了新的挑战。使用相同的溶剂进行多层沉积可能会溶解已沉积的层。在这项工作中,我们引入了一类新的热敏基团,它们能在热处理后降低共轭聚合物的溶解度。通过模块化方法,我们可以在 140 °C 至 200 °C 之间调节热裂解温度。这样就能制造出具有坚固耐溶剂活性层的有机太阳能电池和场效应晶体管(FET)。
Asymmetric Ketoalkylation/Rearrangement of Alkyenlfurans via Synergistic Photoredox/Brønsted Acid Catalysis
作者:Jie Wei、Yurong Tang、Qian Yang、Hongxiang Li、Dongxian He、Yunfei Cai
DOI:10.1021/acs.orglett.2c03040
日期:2022.11.4
An enantioselective three-component rearrangement of alkenylfurans with various cycloalkyl silyl peroxides and anilines has been developed by merging photoredox catalysis with chiral Brønstedacidcatalysis. This protocol provides expedient access to a broad spectrum of ketoalkyl-functionalized 4-aminocyclopentenones in high yields with excellent enantio- and diastereoselectivities. Diverse functional