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。
Preparation of aryl ketones via Ni-catalyzed Negishi-coupling reactions with acid chlorides
作者:Seung-Hoi Kim、Reuben D. Rieke
DOI:10.1016/j.tetlet.2011.01.135
日期:2011.3
A Ni-catalyst-catalyzed cross-coupling reaction of organozinc reagents with acid chlorides has been successfully developed. Mild reaction conditions were required to complete the coupling reactions affording the corresponding aryl ketones in good to excellent yields.
L-Proline was identified as an effective additive to promote the Rosenmund-vonBraun reaction at a lower temperature (80-120 °C). This modified Rosenmund-vonBraun cyanation of aryl bromides exhibits excellent functional-group compatibility, and provide an efficient and convenient approach for the synthesis of aryl nitriles.
The present invention relates to new compounds of the formula (I) a process for their preparation, pharmaceutical formulations containing said therapeutically active compounds and to the use of said active compounds in therapy, as well as intermediates used in the preparation of said active compounds.
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