通过AIBN / O 2催化剂体系实现了sp 3 C H键的官能化和C C键的裂解,在温和的反应条件下提供了一系列的二苯甲酮。机理研究表明,过氧化物中间体参与了这一转变,在二苯基甲烷的情况下,sp 3 C C键通过过氧化物重排而断裂,这可能提供了一种断裂相对较强的C C键并被应用的新方法。更一般的C C键活化。
Reductive Activation and Hydrofunctionalization of Olefins by Multiphoton Tandem Photoredox Catalysis
作者:Milena L. Czyz、Mitchell S. Taylor、Tyra H. Horngren、Anastasios Polyzos
DOI:10.1021/acscatal.1c01000
日期:2021.5.7
of olefin feedstocks to architecturally complex alkanes represents an important strategy in the expedient generation of valuable molecules for the chemical and life sciences. Synthetic approaches are reliant on the electrophilicactivation of unactivated olefins, necessitating functionalization with nucleophiles. However, the reductive functionalization of unactivated and less activatedolefins with
Higly efficienthydroarylation and hydroalkylation of styrenes with various arenes and 1,3-dicarbonyl compounds respectively have been developed using Amberlyst-15 as a heterogeneous catalyst. The ...
An efficient in situ prepared superacid BF3–H2O promoted benzylation of arenes using benzyl alcohols and acetates achieves various diarylalkanes.
一种高效的原位制备的超强酸BF3-H2O促进的芳烃苄基化反应,使用苄醇和醋酸酯制备各种二芳基烷烃。
Feedstocks to Pharmacophores: Cu-Catalyzed Oxidative Arylation of Inexpensive Alkylarenes Enabling Direct Access to Diarylalkanes
作者:Aristidis Vasilopoulos、Susan L. Zultanski、Shannon S. Stahl
DOI:10.1021/jacs.7b03387
日期:2017.6.14
A Cu-catalyzed method has been identified for selective oxidative arylation of benzylic C-H bonds with arylboronic esters. The resulting 1,1-diarylalkanes are accessed directly from inexpensive alkylarenes containing primary and secondary benzylic C-H bonds, such as toluene or ethylbenzene. All catalyst components are commercially available at low cost, and the arylboronic esters are either commercially
已经确定了一种 Cu 催化的方法,用于苄基 CH 键与芳基硼酸酯的选择性氧化芳基化。所得的 1,1-二芳基烷烃可直接从含有伯和仲苄基 CH 键的廉价烷基芳烃(如甲苯或乙苯)中获得。所有催化剂组分均可以低成本商购获得,并且芳基硼酸酯可商购获得或容易从商购硼酸获得。强调了这些方法在药物化学应用中的潜在效用。
A Simple Catalyst for the Efficient Benzylation of Arenes by Using Alcohols, Ethers, Styrenes, Aldehydes, or Ketones
One catalyst fits all! One catalyst is active for a wide set of benzylating reactions (see scheme). A tandem process allows the use of aldehydes and ketones as benzylating agents.