能够形成碳-氮、碳-氧和碳-碳键的反应是合成化学的核心。然而,通常需要底物预功能化来实现此类转化,而无需强制反应条件。因此,开发丰富的原料化学品的直接偶联方法对于快速构建复杂的分子支架是非常必要的。在这里,我们报道了在可见光照射下羧酸与多种亲核试剂的铜介导的净氧化脱羧偶联。初步机理研究表明,该反应中的相关生色团是原位组装的 Cu( ii ) 羧酸盐物种。我们提出,可见光激发配体到金属的电荷转移(LMCT)状态会导致自由基脱羧过程,从而引发氧化交叉偶联。该反应适用于多种偶联伙伴,包括复杂的药物分子,表明这种交叉亲核偶联策略将促进快速化合物库合成,以发现新的药物制剂。
[EN] 1-ALKOXYETHYL-4-ISOBUTYL-BENZENE AS AROMA INGREDIENTS<br/>[FR] 1-ALCOXYÉTHYL-4-ISOBUTYL-BENZÈNE UTILISÉ EN TANT QU'INGRÉDIENTS AROMATIQUES
申请人:BASF SE
公开号:WO2020260165A1
公开(公告)日:2020-12-30
The presently claimed invention is directed to the use of 1-alkoxyethyl-4-isobutyl-benzene of formula (I) to impart an aroma impression to a composition. The presently claimed invention also relates to a method of imparting such aroma impression. The present invention is further directed to compositions comprising the compound of formula (I) and at least one aroma chemical as well as to compositions comprising the compound of formula (I) and at least one further component selected from the group consisting of aroma chemicals, surfactants, oil components, anti-oxidants, deodorant-active agents and solvents. The present invention also relates to a compound of formula (Iʼ).