70384-83-7 Usage
General Description
Ethyl 5-chloro-2-oxo-2H-chromene-3-carboxylate is a chemical compound with a molecular formula of C11H9ClO4. It is a derivative of 2H-chromene, containing a chlorine atom at the 5-position and an ester functional group at the 3-position. Ethyl 5-chloro-2-oxo-2H-chromene-3-carboxylate is commonly used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It has also been studied for its potential biological activities, including anti-inflammatory and anti-cancer properties. Overall, Ethyl 5-chloro-2-oxo-2H-chromene-3-carboxylate has important applications in the pharmaceutical and chemical industries.
Check Digit Verification of cas no
The CAS Registry Mumber 70384-83-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,3,8 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 70384-83:
(7*7)+(6*0)+(5*3)+(4*8)+(3*4)+(2*8)+(1*3)=127
127 % 10 = 7
So 70384-83-7 is a valid CAS Registry Number.
70384-83-7Relevant articles and documents
Aryne Precursors for Selective Generation of 3-Haloarynes: Preparation and Application to Synthetic Reactions
Kakigi, Kengo,Kawasaki, Yuichi,Miyabe, Hideto,Miyoshi, Shouta,Yoshioka, Eito
, p. 13544 - 13556 (2020/12/15)
The synthesis and reaction of new 3-haloaryne precursors 2a-2h were studied. The ortho-(trimethylsilyl)aryl triflate precursors 2a-2h were prepared by a simple procedure involving O-trimethylsilylation and migration of a trimethylsilyl group followed by triflation. The remarkable feature of new precursors is the selective generation of 3-haloarynes by suppressing the competitive thia-Fries rearrangement, which is the problem in the reaction using the well-known 3-haloaryne precursors. The advantage of new precursor 2a over a typical precursor 1 was confirmed by the direct comparisons in several reactions. The application of precursors 2a-2h to the syntheses of heterocycles was also reported.
