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77420-44-1

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77420-44-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77420-44-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,2 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77420-44:
(7*7)+(6*7)+(5*4)+(4*2)+(3*0)+(2*4)+(1*4)=131
131 % 10 = 1
So 77420-44-1 is a valid CAS Registry Number.

77420-44-1Relevant articles and documents

Development of a Rhodium(II)-Catalyzed Chemoselective C(sp3)-H Oxygenation

Lin, Yun,Zhu, Lei,Lan, Yu,Rao, Yu

supporting information, p. 14937 - 14942 (2015/10/19)

We report the first example of RhII-catalyzed chemoselective double C(sp3)-H oxygenation, which can directly transform various toluene derivatives into highly valuable aromatic aldehydes with great chemoselectivity and practicality. The critical combination of catalyst Rh(OAc)2, oxidant Selectfluor, and solvents of TFA/TFAA promises the successful delivery of the oxidation with satisfactory yields. A possible mechanism involving a unique carbene-Rh complex is proposed, and has been supported by both experiments and theoretical calculations.

The investigation of nucleophilic reactions of 3 -bromo/chloro phthalide with amines

Desai,Chaphekar,Samant

, p. 810 - 813 (2007/10/03)

The reaction of 3-bromo/chloro phthalide 1a/b with secondary amines in polar solvents gives the corresponding amides of 2-formylbenzoic acid, while in nonpolar solvents gives 3-aminophthalides. The reaction of 1a/b with aromatic primary amines gives 3-arylaminophthalides, while with aliphatic primary amines 3-hydroxyphthalimidines are obtained.

A regioselective synthesis of dimethyl phthalide-3-phosphonates

Watanabe,Ijichi,Furukawa

, p. 94 - 98 (2007/10/02)

Dimethyl phthalide-3-phosphonates having various substituents on the benzene ring were regioselectively synthesized by the reaction of N,N-diethyl-2-formylbenzamides with tert-butyldimethylsilyl dimethyl phosphite followed by treatment with methanesulfonic acid. N,N-Diethyl-2-formylbenzamides were regioselectively prepared by ortho lithiation-formylation of the corresponding benzamides.

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