Decarboxylative 1,4-Addition of α-Oxocarboxylic Acids with Michael Acceptors Enabled by Photoredox Catalysis
作者:Guang-Zu Wang、Rui Shang、Wan-Min Cheng、Yao Fu
DOI:10.1021/acs.orglett.5b02392
日期:2015.10.2
Enabled by iridium photoredoxcatalysis, 2-oxo-2-(hetero)arylacetic acids were decarboxylatively added to various Michael acceptors including α,β-unsaturated ester, ketone, amide, aldehyde, nitrile, and sulfone at room temperature. The reaction presents a new type of acyl Michael addition using stable and easily accessible carboxylicacid to formally generate acyl anion through photoredox-catalyzed
Crossed aldol-type reactions catalyzed by rhodium complexes
作者:Susumu Sato、Isamu Matsuda、Yusuke Izumi
DOI:10.1016/0022-328x(88)83037-7
日期:1988.9
ketones. Rh4(CO)12 and [Rh(COD)(DPPB)]ClO4 also catalyze the reaction of enol trimethylsilyl with acetals or ketals, whereas [Rh(COD)(DPPB)PF6 does not. When [Rh(COD)(DPPB)ClO4 is used as the catalyst, this type of aldol reaction is extended to the one-potsynthesis of trisubstituted furans from enol trimethylsilyl ether and α-trimethylsiloxy acetal.
Titanium-induced syntheses of furans, benzofurans and indoles
作者:Alois Fürstner、Denis N. Jumbam
DOI:10.1016/s0040-4020(01)89848-3
日期:1992.1
Highly reactive titanium on graphite as the reagent of choice promotes intramolecular McMurry type reactions of acyloxy- and acylamido carbonyl compounds affording furans, benzofurans and indoles in good to excellent yields. A variety of reducible groups in the substrates is tolerated (e.g. -F, -Cl, -Br, -I, -CF3, -OMe, -CN, -thiophenyl, -COOR, -CONR2) and strained products such as 11h can be obtained
Aromatic acyloxycarbonyl- and acylamidocarbonyl compounds on treatment with titanium on graphite (4 equivalents) readily afford (benzo)furans and indoles respectively, by an unprecedented McMurry-type reaction.
The present invention relates to novel phthalazine derivatives and, more particularly, to phthalazine derivatives that are useful as protein kinase inhibitors. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and methods of treatment using the compounds.