α‐Arylation, α‐Arylative Esterification, or Acylation: A Stoichiometry‐Dependent Trichotomy in the Pd‐Catalyzed Cross‐Coupling between Aldehydes and Aryl Bromides
作者:Pradeep Nareddy、Clément Mazet
DOI:10.1002/asia.201300724
日期:2013.11
Three′s company: The selective α‐arylation and α‐arylativeesterification of linear and branched aldehydes is reported for a variety of bromoarenes. The acylation of arylbromides can be achieved with linear aldehydes (see scheme). All these transformations were performed with a single [(N‐heterocyclic carbene)Pd] catalyst through adjustment of the stoichiometry of the reagents and the appropriate
Iridium‐Catalysed Reductive Deoxygenation of Ketones with Formic Acid as Traceless Hydride Donor
作者:Zhiheng Yang、Xueya Zhu、Shiyi Yang、Weiyan Cheng、Xiaojian Zhang、Zhanhui Yang
DOI:10.1002/adsc.202000821
日期:2020.12.8
An iridium‐catalysed deoxygenation of ketones and aldehydes is achieved, with formic acid as hydride donor and water as co‐solvent. At low catalyst loading, a number of 4‐(N,N‐disubstituted amino) arylketones are readily deoxygenated in excellent yields and chemoselectivity. Numerous functional groups, especially phenolic and alcoholic hydroxyls, secondary amine, carboxylic acid, and alkyl chloride
以甲酸为氢化物供体,水为助溶剂,实现了铱催化的酮和醛的脱氧。在低催化剂负载下,许多4-(N,N-二取代氨基)芳基酮易于脱氧,具有出色的收率和化学选择性。许多官能团,尤其是酚羟基和醇羟基,仲胺,羧酸和烷基氯,都具有良好的耐受性。当使用DCO 2 D和D 2 O代替它们的氢化对应物时,可获得双歧化的双链烷烃达90%。激活4‐(N,N已证明二取代氨基)芳基会经历各种有用的转化。脱氧氘已用于制备氘代药物分子Chlorambucil-4,4- d 2。
본 발명은 신규한 화합물 및 이의 제조 방법에 관한 것으로, 보다 상세하게는 우수한 흡광 특성을 나타내며, 가열 조건에서의 손실이 최소화되어, 감광성 수지 조성물에 광중합 개시보조제 또는 증감제로서 포함되는 경우에 감도, 투과율 및 기계적 특성이 우수한 패턴을 얻을 수 있고, 장비의 손상을 방지할 수 있는 신규한 화합물 및 이의 제조 방법에 관한 것이다.