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2-phenyl-2,3-dihydrobenzo[b][1,4]oxazepin-4(5H)-one is a complex organic compound with the molecular formula C16H13NO2. It is a derivative of benzo[b][1,4]oxazepine, a heterocyclic compound consisting of a benzene ring fused to an oxazepine ring. The molecule features a phenyl group attached to the 2-position and a carbonyl group at the 4-position, with the 2,3-dihydro prefix indicating the presence of two hydrogen atoms in the 2,3 positions, which reduces the ring's aromaticity. 2-phenyl-2,3-dihydrobenzo[b][1,4]oxazepin-4(5H)-one is of interest in medicinal chemistry and may have potential applications in the development of pharmaceuticals due to its unique structure and properties.

5667-04-9

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5667-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5667-04-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,6 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5667-04:
(6*5)+(5*6)+(4*6)+(3*7)+(2*0)+(1*4)=109
109 % 10 = 9
So 5667-04-9 is a valid CAS Registry Number.

5667-04-9Relevant academic research and scientific papers

Remodeling and Enhancing Schmidt Reaction Pathways in Hexafluoroisopropanol

Motiwala, Hashim F.,Charaschanya, Manwika,Day, Victor W.,Aubé, Jeffrey

, p. 1593 - 1609 (2016/03/01)

The effect of carrying out two variations of the Schmidt reaction with ketone electrophiles in hexafluoroisopropanol (HFIP) solvent has been studied. When TMSN3 is reacted with ketones in the presence of triflic acid (TfOH) promoter, tetrazoles are obtained as the major products. This observation is in contrast to established methods, which usually lead to amides or lactams arising from formal NH insertion as the major products. The full product profiles of several examples of this reaction are also reported and found to include mechanistically interesting products (e.g., double ring expansion). Application of TfOH promoter in HFIP was also found to promote the reaction of a hydroxyalkyl azide with a ketone, which affords lactams following nucleophilic opening of initially formed iminium ether more efficiently than previously reported methods. (Chemical Equation Presented).

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