40547-03-3

Basic information

• Product Name: 6-Methoxy-4-phenyl-2H-1-benzopyran-2-one
• Synonyms: 6-Methoxy-4-phenyl-2H-1-benzopyran-2-one
• CAS NO: 40547-03-3
• Molecular Weight: 252.269
• Mol File: 40547-03-3.mol
• Article Data: 23

Chemical Properties

• CAS DataBase Reference: 6-Methoxy-4-phenyl-2H-1-benzopyran-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 6-Methoxy-4-phenyl-2H-1-benzopyran-2-one(40547-03-3)
• EPA Substance Registry System: 6-Methoxy-4-phenyl-2H-1-benzopyran-2-one(40547-03-3)

Safety Data

• Hazardous Substances Data: 40547-03-3(Hazardous Substances Data)

Upstream product

• 14770-96-8 oxybenzone 
• 108-59-8 malonic acid dimethyl ester 
• 124-38-9 carbon dioxide 
• 62594-98-3 4-methoxy-2-(1-phenylethenyl)phenol 
• 536-74-3 phenylacetylene 
• 150-76-5 4-methoxy-phenol 
• 73220-24-3 ethyl (E)-3-(2-hydroxy-5-methoxyphenyl)propenoate 
• 373-84-2 difluorotriphenyl-λ⁵-stibane 
• 672-13-9 2-hydroxy-5-methoxybenzaldehyde 
• 201230-82-2 carbon monoxide 
• 638191-28-3 trifluoromethanesulfonic acid 6-methoxy-2-oxo-2H-chromen-4-yl ester 
• 98-80-6 phenylboronic acid 
• 637-44-5 phenylpropyolic acid 
• 71797-98-3 4-Chloro-6-methoxy-2H-1-benzopyran-2-one 

Relevant articles and documents

Metal-free, Br?nsted acid-mediated synthesis of coumarin derivatives from phenols and propiolic acids

A novel synthesis of coumarin derivatives by Br?nsted acid-mediated condensation and intramolecular cyclization of phenols and propiolic acids was reported. This transformation requires the use of TfOH in place of a conventional metal mediator, and it occurs under mild conditions and provides rapid access to coumarin derivatives in good yields.

Gold(I)-Catalyzed Intramolecular Hydroarylation of Phenol-Derived Propiolates and Certain Related Ethers as a Route to Selectively Functionalized Coumarins and 2 H-Chromenes

Methods are reported for the efficient assembly of a series of phenol-derived propiolates, including the parent system 56, and their Au(I)-catalyzed cyclization (intramolecular hydroarylation) to give the corresponding coumarins (e.g., 1). Simple syntheses of natural products such as ayapin (144) and scoparone (145) have been realized by such means, and the first of these subject to single-crystal X-ray analysis. A related process is described for the conversion of propargyl ethers such as 156 into the isomeric 2H-chromene precocene I (159), a naturally occurring inhibitor of juvenile hormone biosynthesis.

Nanocatalosomes as Plasmonic Bilayer Shells with Interlayer Catalytic Nanospaces for Solar-Light-Induced Reactions

Interest and challenges remain in designing and synthesizing catalysts with nature-like complexity at few-nm scale to harness unprecedented functionalities by using sustainable solar light. We introduce “nanocatalosomes”—a bio-inspired bilayer-vesicular design of nanoreactor with metallic bilayer shell-in-shell structure, having numerous controllable confined cavities within few-nm interlayer space, customizable with different noble metals. The intershell-confined plasmonically coupled hot-nanospaces within the few-nm cavities play a pivotal role in harnessing catalytic effects for various organic transformations, as demonstrated by “acceptorless dehydrogenation”, “Suzuki–Miyaura cross-coupling” and “alkynyl annulation” affording clean conversions and turnover frequencies (TOFs) at least one order of magnitude higher than state-of-the-art Au-nanorod-based plasmonic catalysts. This work paves the way towards next-generation nanoreactors for chemical transformations with solar energy.