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1257390-85-4

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1257390-85-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257390-85-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,3,9 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1257390-85:
(9*1)+(8*2)+(7*5)+(6*7)+(5*3)+(4*9)+(3*0)+(2*8)+(1*5)=174
174 % 10 = 4
So 1257390-85-4 is a valid CAS Registry Number.

1257390-85-4Downstream Products

1257390-85-4Relevant articles and documents

Silver-mediated synthesis of indolizines via oxidative C-H functionalization and 5-endo-dig cyclization

Pandya, Amit N.,Fletcher, James T.,Villa, Eric M.,Agrawal, Devendra K.

, p. 6922 - 6924 (2014)

An efficient strategy for the synthesis of indolizines from readily available starting materials via oxidative C-H functionalization and 5-endo-dig cyclization in one step has been demonstrated. This protocol represents wide substrate scope, high function

Desulfitative palladium-catalyzed direct C-3 arylation of indolizines with arylsulfonyl chlorides

Zhang, Wei,Liu, Fang,Zhao, Baoli

, p. 524 - 527 (2015/08/04)

An efficient Pd-catalyzed desulfitative approach to C-3 arylation of indolizine derivatives has been developed, and the protocol uses readily available arylsulfonyl chlorides as the arylation reagent under nitrogen. This transformation was performed in a mixed solvent of 1-methyl-2-pyrrolidone and dimethoxyethane using simple triphenylphosphine as a ligand, which provides a new method for the C-3 arylation of indolizines. An efficient Pd-catalyzed desulfitative approach to C-3 arylation of indolizine derivatives has been developed, the protocol using readily available arylsulfonyl chlorides as the arylation reagent under nitrogen. This transformation proceeds in a mixed solvent of NMP and DME using simple triphenylphosphine a ligand, and provides a new method for the C-3 arylation of indolizines.

Iodine-promoted synthesis of 3-arylindolizine-1-carboxylates from 2-(2-nitro-1-arylethyl)malonates and pyridine

Li, Yun,Zhou, Zhengquan,Ye, Weijian,Liu, Juanjuan,Yao, Juan,Wang, Cunde

, p. 526 - 530 (2013/10/22)

An efficient and straightforward one-pot synthetic protocol has been developed for the synthesis of 3-arylindolizine- 1-carboxylates via 1,3-dipolar annulation of 2-(2-nitro-1-arylethyl)malonates with pyridine and subsequent aromatisation in the presence of molecular iodine. The structure of methyl 3-(4-methoxyphenyl)indolizine-1-carboxylate (2a) and methyl 3-iodo-2-(4- nitrophenyl)indolizine-1-carboxylate (2f) was further confirmed by X-ray single crystal analysis. Website

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