33902-32-8Relevant academic research and scientific papers
Synthetic method of isocoumarin compound
-
Paragraph 0063; 0105-0107; 0109; 0112-0113; 0118-0119, (2022/03/31)
The invention belongs to the field of organic chemical synthesis, and particularly relates to a synthesis method of an isocoumarin compound. A compound shown in (A) and a compound shown in (B) react in a solvent under the action of a noble metal catalyst and a first additive to obtain a compound shown in (C); the noble metal catalyst is one or more of triruthenium dodecacarbonyl, a dichlorophenyl ruthenium (II) dimer and dichloro bis (4-methyl isopropyl phenyl) ruthenium (II); the first additive is one or more of silver tetrafluoroborate, silver hexafluoroantimonate, copper acetate, zinc acetate, silver trifluoromethanesulfonate, copper trifluoromethanesulfonate and zinc trifluoromethanesulfonate. The invention provides a simple and effective method for constructing the lactone compound, and the method does not need to additionally add an additive with a guiding effect, and can give consideration to the self-cyclization and cross-cyclization isocoumarin compound of sulfur ylide.
Ruthenium(II)-Catalyzed Construction of Isocoumarins via Dual C-H/C-C Activation of Sulfoxonium Ylides
Wen, Si,Chen, Yanhui,Zhao, Zemin,Ba, Dan,Lv, Weiwei,Cheng, Guolin
, p. 1216 - 1223 (2020/01/09)
A ruthenium(II)-catalyzed annulation between two molecules of sulfoxonium ylides is achieved, generating a variety of substituted isocoumarins in reasonable yields. This strategy features dual C-H/C-C activation in one pot and has a wide substrate scope and good functional group tolerance.
Ruthenium(II)-Catalyzed Homocoupling of Weakly Coordinating Sulfoxonium Ylides via C?H Activation/Annulations: Synthesis of Functionalized Isocoumarins
Zhou, Ming-Dong,Peng, Zhen,Wang, He,Wang, Zhao-Hui,Hao, Da-Jin,Li, Lei
, p. 5191 - 5197 (2019/11/13)
Homocoupling of weakly coordinating sulfoxonium ylides was accomplished via ruthenium (II) catalyzed C?H activation process. This strategy provides a convenient, efficient and step-economic method to access 3-substituted isocoumarins with good functional
Preparation method of substituted isocoumarin derivative (by machine translation)
-
Paragraph 0055-0058, (2019/10/01)
The invention discloses a preparation method of a substituted isocoumarin derivative and, in particular, discloses a preparation method of a substituted isocoumarin derivative. When a carbon-carbon bond and a carbon hydrogen bond are cut off, a new carbon
Super acid catalysed sequential hydrolysis/cycloisomerization of o-(acetylenic)benzamides under microwave condition: Synthesis, antinociceptive and antiinflammatory activity of substituted isocoumarins
Praveen, Chandrasekaran,Dheenkumar,Perumal
, p. 71 - 83 (2013/05/09)
Synthesis of isocoumarins and related compounds via triflic acid promoted hydrolysis/cyclization sequence of 2-(alkynyl)benzamides under microwave condition was achieved. The substrate scope of the reaction was broad to include not only aromatic but also
Synthesis of 3-arylisocoumarins, including thunberginols A and B, unsymmetrical 3,4-disubstituted isocoumarins, and 3-ylidenephthalides via iodolactonization of methyl 2-ynylbenzoates or the corresponding carboxylic acids
Rossi, Renzo,Carpita, Adriano,Bellina, Fabio,Stabile, Paolo,Mannina, Luisa
, p. 2067 - 2081 (2007/10/03)
3-Aryl-4-iodoisocoumarins, which were readily and efficiently prepared by regioselective iodolactonization of methyl 2-ynylbenzoates or the corresponding carboxylic acids, were used as precursors either to 3-arylisocoumarins, including naturally-occurring
