Welcome to LookChem.com Sign In|Join Free
  • or
6-methoxy-3-(4-methoxyphenyl)-1H-2-benzopyran-1-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

33902-32-8

Post Buying Request

33902-32-8 Suppliers

Recommended suppliers

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

33902-32-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33902-32-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,0 and 2 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 33902-32:
(7*3)+(6*3)+(5*9)+(4*0)+(3*2)+(2*3)+(1*2)=98
98 % 10 = 8
So 33902-32-8 is a valid CAS Registry Number.

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

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1 Customer Service

What can I do for you?
Get Best Price

Get Best Price for 33902-32-8