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53403-04-6

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53403-04-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53403-04-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,4,0 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 53403-04:
(7*5)+(6*3)+(5*4)+(4*0)+(3*3)+(2*0)+(1*4)=86
86 % 10 = 6
So 53403-04-6 is a valid CAS Registry Number.

53403-04-6Relevant articles and documents

Lewis Base-Promoted Ring-Opening 1,3-Dioxygenation of Unactivated Cyclopropanes Using a Hypervalent Iodine Reagent

Gieuw, Matthew H.,Ke, Zhihai,Yeung, Ying-Yeung

supporting information, p. 3782 - 3786 (2018/03/13)

A facile and effective system has been developed for the regio- and chemoselective ring-opening/electrophilic functionalization of cyclopropanes through C?C bond activation by [bis(trifluoroacetoxy)iodo]benzene with the aid of the Lewis basic promoter p-toluenesulfonamide. The p-toluenesulfonamide-promoted system works well for a wide range of cyclopropanes, resulting in the formation of 1,3-diol products in good yields and regioselectivity.

Cyclopropanation of alkenes with CH2I2/Et3Al by the phase-vanishing method based on fluorous phase screen

Matsubara, Hiroshi,Tsukida, Masaaki,Yasuda, Shinji,Ryu, Ilhyong

scheme or table, p. 951 - 954 (2009/04/04)

Phase-vanishing (PV) method using perfluorohexanes as a screen phase was applied to cyclopropanation reactions with CH2I2/Et2Zn and CH2I2/Et3Al. When Et3Al was used as a carbenoid generator, the reaction proceeded smoothly and desired cyclopropane derivatives were obtained in high yield. The PV cyclopropanation took 2 or 3 days to complete, however, reduction of reaction time by a factor of 2-3 was also achieved by vigorous stirring after the bottom CH2I2 layer disappeared.

Processing of cyclopropylarenes by toluene dioxygenase: Isolation and absolute configuration of metabolites

Finn, Kevin J.,Rochon, Lena,Hudlicky, Tomas

, p. 3606 - 3613 (2007/10/03)

Several arenes possessing a cyclopropyl substituent were subjected to enzymatic oxidation with toluene dioxygenase. The absolute configuration of metabolites was established by chemical means.

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