Ruthenium(<scp>ii</scp>)-catalyzed oxidative dehydrogenation and hydroarylation of maleimides with phthalazinones – insights into additive-controlled product selectivity
developed ruthenium(II)-catalyzed oxidative dehydrogenation and hydroarylation of maleimides with phthalazinones. The product selectivity is controlled by the additives, and the hydroarylated product was obtained in water, which is an important highlight of this study. Control experiments were conducted to elucidate a plausible mechanism. These experiments suggest the occurrence of an oxidative dehydrogenation
在此,我们开发了钌 ( II ) 催化的马来酰亚胺与酞嗪酮的氧化脱氢和氢芳基化反应。产物选择性受添加剂控制,在水中得到氢化芳基化产物,这是本研究的一个重要亮点。进行对照实验以阐明合理的机制。这些实验表明,在 E2 型消除过程中发生了氧化脱氢途径——这是生产 Heck 型产品的关键步骤。
Vinylene Carbonate as Latent Formylmethyl Surrogate: The Expediency of Ruthenium(II) Catalysis in Accessing Arylacetaldehydes, Arylacetates and Acetals
作者:Dolly David Thalakottukara、Thirumanavelan Gandhi
DOI:10.1002/ejoc.202300847
日期:2024.2.5
Herein, we report a Ru(II)-catalyzed additive controlled direct formylmethylation and sequential dehydrogenative esterification of phthalazinones to access arylacetaldehydes, arylacetates, and acetals using vinylene carbonate as a C2 synthon. The reaction mechanism is elucidated using various control experiments and confirmation of possible intermediates by mass spectrometry.
A NOVEL METHOD FOR THE SYNTHESIS OF 1(2H)- PHTHALAZINONE DERIVATIVES USING HETEROPOLYACIDS AS HETEROGENEOUS AND RECYCLABLE CATALYSTS
作者:Majid M. Heravi、Bita Baghernejad、Hossein A. Oskooie、Fatemeh F. Bamoharram
DOI:10.1515/hc.2008.14.5.375
日期:2008.1
A simple and efficient synthesis of 1(2H)phthalazinone derivatives was achieved via a reaction of phthalaldehydicacid and various phenyl hydrazines in CHCI3 in the presence of a catalytic amount of different heteropolyacids (HPAs) in very good yields.
Sustainable Ru(II)-Catalyzed ortho-C(sp2)–H Hydroxyalkylation of Phthalazinones Using Ethyl Glyoxalate: Access to α,α′-Arylcarboxy sec-Alcohols
作者:Thirumanavelan Gandhi、Alagumalai Ramkumar
DOI:10.1055/a-2114-5426
日期:2023.11
An operationally simple and expeditious protocol for Ru(II)-catalyzed ortho-C(sp2)–H hydroxyalkylation of phthalazinones using commercially available ethylglyoxalate in 2-Me-THF is reported. This greener approach involves the imine nitrogen on the phthalazinones as a directing group to effect the regioselective hydroxyalkylation. Ample examples of biologically relevant hydroxyalkylated phthalazinones