5926-95-4 Usage
General Description
2H-Pyran-2,6(3H)-dione, also known as α-pyranone, is a chemical compound with a molecular formula of C5H4O3. It is a lactone that is commonly used in organic synthesis and pharmaceutical research. 2H-Pyran-2,6(3H)-dione is characterized by its cyclic structure and its ability to form hydrogen bonds, making it a versatile building block for various chemical reactions. It is also known for its antioxidant properties, which makes it a potential candidate for the development of new drugs and therapies. Additionally, 2H-Pyran-2,6(3H)-dione is used in the manufacturing of dyes, pigments, and flavoring agents due to its distinct aromatic properties.
Check Digit Verification of cas no
The CAS Registry Mumber 5926-95-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,9,2 and 6 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5926-95:
(6*5)+(5*9)+(4*2)+(3*6)+(2*9)+(1*5)=124
124 % 10 = 4
So 5926-95-4 is a valid CAS Registry Number.
5926-95-4Relevant articles and documents
Organocatalytic asymmetric formal [3 + 2] cycloaddition with in situ-generated N-carbamoyl nitrones
Gioia, Claudio,Fini, Francesco,Mazzanti, Andrea,Bernardi, Luca,Ricci, Alfredo
supporting information; experimental part, p. 9614 - 9615 (2011/02/23)
(Chemical Equation Presented) A novel organocatalytic formal [3 + 2] cycloaddition reaction with in situ generation of N-carbamoyl nitrones is presented. For the first time, N-Boc- and N-Cbz-protected isoxazolidines have been directly obtained as single diastereoisomers in generally high yields and enantiomeric excesses using mild reaction conditions and inexpensive, readily available Cinchona alkaloid quaternary ammonium salts as catalysts. Synthetic manipulations of the products provided highly valuable building blocks such as free isoxazolidines, a N-Boc-1,3-aminoalcohol, and a free δ-lactam. This report represents a pioneering work in the use of N-carbamoyl nitrones as electron-poor 1,3-dipoles and glutaconates as new dipolarophiles in asymmetric catalysis.
