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191112-67-1

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191112-67-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191112-67-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,1,1 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 191112-67:
(8*1)+(7*9)+(6*1)+(5*1)+(4*1)+(3*2)+(2*6)+(1*7)=111
111 % 10 = 1
So 191112-67-1 is a valid CAS Registry Number.

191112-67-1Relevant articles and documents

Continued Exploration of Trifunctional Alkyl 4-Chloro-2-diazo-3-oxobutanoates: Streamlined Entry into [1,2,3]Triazolo[5,1- c ][1,4]benzoxazines and [1,2,3]Triazolo[5,1- c ][1,4]benzoxazepines

Budeev, Anton V.,Kantin, Grigory,Dar'In, Dmitry,Krasavin, Mikhail

, p. 2155 - 2166 (2021/02/22)

Further exploration of the trifunctional character of previously introduced alkyl 4-chloro-2-diazo-3-oxobutanoates in reactions with N -protected substituted o -aminophenols followed by deprotection provided a convenient entry into [1,2,3]triazolo[5,1- c ][1,4]benzoxazines, which are of high medicinal importance, as documented in the literature. The same approach applied to N -protected substituted o -(aminomethyl)phenols afforded [1,2,3]triazolo[5,1- c ][1,4]benzoxazepines, which are practically unexplored compounds from a medicinal chemistry perspective. The syntheses start with S N 2-type alkylation of the phenol. Removal of the protecting group triggers imine formation followed by Wolff 1,2,3-triazole synthesis.

An Expedient Synthesis of 2-Aryl-1,4-benzoxazin-3-ones via Tandem Anionic Cyclisation/Alkylation Reactions of N -Boc- O -benzyl-2-aminophenols

Bodero, Olga,Spivey, Alan C.

supporting information, p. 471 - 474 (2017/02/24)

A one-pot, tandem anionic cyclization/alkylation reaction of N-Boc-O-benzylated-2-aminophenols to give 2-aryl-1,4-benzoxazin-3-ones is described. The Boc protecting group plays a crucial role in the process, as the tert-butoxide liberated in the cyclisati

Rearrangement of differentially protected N-arylhydroxylamines

Porzelle, Achim,Woodrow, Michael D.,Tomkinson, Nicholas C. O.

experimental part, p. 5135 - 5143 (2009/06/17)

The rearrangement of a series of N,O-difunctionalised N-arylhydroxylamines to generate protected 2-aminophenols has been investigated. N-Boc-N-Aryl-O- acylhydroxylamines are stable, isolable compounds which rearrange smoothly at temperatures between 110 and 140°C. The corresponding N-Boc-N-aryl-O- sulfonylhydroxylamines were not isolated and rearrange to 1,2-difunctionalised aminophenols at room temperature in excellent yield. Deprotection of either the N- or O-substituents under standard conditions allows for further synthetic manipulation of either the aniline or phenol functionality. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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