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(E)-3-[(thiophen-2-yl)methylidene]-4-tosyl-3,4-dihydro-2H-1,4-benzoxazine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1232133-33-3

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1232133-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1232133-33-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,2,1,3 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1232133-33:
(9*1)+(8*2)+(7*3)+(6*2)+(5*1)+(4*3)+(3*3)+(2*3)+(1*3)=93
93 % 10 = 3
So 1232133-33-3 is a valid CAS Registry Number.

1232133-33-3Downstream Products

1232133-33-3Relevant academic research and scientific papers

A palladium-catalyzed facile and general method for the stereoselective synthesis of (E)-3-arylidene-3,4-dihydro-2H-1,4-benzoxazines and their naphthoxazine analogues

Brahma, Kaushik,Das, Bimolendu,Chowdhury, Chinmay

, p. 5863 - 5871 (2014)

Palladium-catalyzed cyclocondensation of an aryl iodide with N-tosyl-2-(prop-2′-ynyloxy)aniline at room temperature is shown to constitute a convenient general method for the synthesis of (E)-3-arylidene-3,4-dihydro-2H-1,4-benzoxazines in moderate to very good yields. The method could also be extended to the synthesis of (E)-3-arylidene-2H-naphth[1,2-b][1,4]oxazines. The regio- and stereo-selectivity of the process, short reaction time, operational simplicity, and use of inexpensive starting materials represent its attractive features.

Totally regio- and stereoselective synthesis of (E)-3-arylidene-3,4-dihydro-2H-1,4-benzoxazines under palladium catalyst

Chowdhury, Chinmay,Brahma, Kaushik,Mukherjee, Sanjukta,Sasmal, Anup Kumar

supporting information; experimental part, p. 2859 - 2861 (2010/07/06)

A new, one-pot palladium catalyzed reaction has been developed for the general synthesis of (E)-3-arylidene-3,4-dihydro-2H-1,4-benzoxazines at room temperature. The reaction procedure tolerates various functional groups. The method is characterized by reg

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