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5244-75-7

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5244-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5244-75-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,4 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5244-75:
(6*5)+(5*2)+(4*4)+(3*4)+(2*7)+(1*5)=87
87 % 10 = 7
So 5244-75-7 is a valid CAS Registry Number.

5244-75-7Relevant articles and documents

Synthesis of 1-Pyrroline by Denitrogenative Ring Expansion of Cyclobutyl Azides under Thermal Conditions

Ban, Kazuho,Miki, Yuya,Sajiki, Hironao,Sawama, Yoshinari,Tomita, Naohito

supporting information, p. 3481 - 3484 (2021/06/17)

We herein report an efficient and systematic synthesis of 1-pyrrolines from cyclobutyl azides under thermal and neutral conditions. The reaction proceeded without any additional reagents, and nitrogen was generated as the sole by-product. Furthermore, the generated 1-pyrrolines could be continuously transformed into pyrroles, N-Boc-amines, and oxaziridines in an one-pot manner. (Figure presented.).

Synthesis of multi-substituted cyclobutanes and alkylidenecyclobutanes by the reaction of cyclobutylmagnesium carbenoids with nucleophiles

Satoh, Tsuyoshi,Kasuya, Takashi,Ishigaki, Masashi,Inumaru, Mio,Miyagawa, Toshifumi,Nakaya, Nobuhito,Sugiyama, Shimpei

experimental part, p. 397 - 408 (2011/04/15)

Treatment of 1-chlorocyclobutyl p-tolyl sulfoxides with Grignard reagents such as ethylmagnesium chloride, isopropylmagnesium chloride, and cyclopentylmagnesium chloride in THF at low temperature gave cyclobutylmagnesium carbenoids in high yields. The gen

Enantioselective synthesis of 2-aryl cyclopentanones by asymmetric epoxidation and epoxide rearrangement

Shen, Yu-Mei,Wang, Bin,Shi, Yian

, p. 1429 - 1432 (2007/10/03)

(Chemical Equation Presented) Optically active epoxides are prepared by the highly enantioselective epoxidation of benzylidenecyclobutanes using a glucose-derived ketone as the catalyst and oxone as the oxidant. A subsequent Lewis acid catalyzed rearrange

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