Vinylogous hydrazone strategy for the organocatalytic alkylation of heteroaromatic derivatives
作者:Beata Łukasik、Justyna Kowalska、Sebastian Frankowski、Łukasz Albrecht
DOI:10.1039/d1cc01923f
日期:——
umpolung approach for the asymmetric Friedel–Crafts-type alkylation of electron-poor heteroaromatic systems has been developed. It is based on the vinylogous reactivity of hydrazones derived from heteroaromatic aldehydes. The donating effect of the hydrazone moiety can be efficiently transferred over the heteroaromatic system activating it towards an asymmetric Friedel–Crafts reaction with α,β-unsaturated
Novel Thiazole Inhibitors of Fructose 1,6-Bishosphatase
申请人:Dang Qun
公开号:US20070225259A1
公开(公告)日:2007-09-27
Compounds of Formula I, their prodrugs and salts, their preparation and their uses are described.
公式I的化合物,它们的前药和盐,它们的制备以及它们的用途被描述了。
[EN] AROMATIC COMPOUNDS FROM FURANICS<br/>[FR] COMPOSÉS AROMATIQUES DÉRIVÉS DES FURANIQUES
申请人:NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
公开号:WO2017146581A1
公开(公告)日:2017-08-31
Described are methods for preparing phenols, benzene carboxylic acids, esters and anhydrides thereof from furanic compounds by reaction with a dienophile, wherein the furanic compounds are reacted with a hydrazine and/or oxime and then reacted with a dienophile.
1H and13C NMR study of 2,3-di- carboxymethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene derivatives
作者:Ange Bighelli、Félix Tomi、Joseph Casanova
DOI:10.1002/mrc.1260301218
日期:1992.12
13C and 1HNMR spectral assignments have been obtained for 2,3‐di‐carboxymethyl‐ 7 ‐oxabicyclo[2.2.1]hepta‐ 2,5‐diene and 19 of its derivatives. The use of a combination of one‐dimensional and two‐dimensional NMR techniques allowed the unambiguous assignments of all 13C resonances of the bicyclic framework.
[EN] BIOMASS CONVERSION<br/>[FR] CONVERSION DE LA BIOMASSE
申请人:NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
公开号:WO2017204634A1
公开(公告)日:2017-11-30
Processes and reactor systems for biomass conversion are described. A continuous process for the conversion of carbohydrate-containing feed material into furanic compounds comprises a reaction step comprising subjecting said feed material to reaction conditions in a reaction medium comprising two immiscible liquid phases, including a reactive phase and an extractive phase, and a Brønsted acid as catalyst, wherein the reaction medium comprises a solid component comprising at least a part of a carbohydrate-containing fraction of said feed material.