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25855-20-3

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25855-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25855-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,8,5 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 25855-20:
(7*2)+(6*5)+(5*8)+(4*5)+(3*5)+(2*2)+(1*0)=123
123 % 10 = 3
So 25855-20-3 is a valid CAS Registry Number.

25855-20-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-phenylquinazoline

1.2 Other means of identification

Product number -
Other names phenylquinazoline

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:25855-20-3 SDS

25855-20-3Relevant articles and documents

2-Chloroquinazoline. Synthesis and reactivity of a versatile heterocyclic building block

Henriksen, Signe Teuber,S?rensen, Ulrik Svane

, p. 8251 - 8254 (2006)

Starting from 2,4-dichloroquinazoline, various methods for the selective removal of the 4-chloro substituent were tested, including catalytic hydrogenation, metal-halogen exchange, metal hydride reduction and reduction with tributyltin hydride-the latter

Method for catalyzing nitrogen heterocyclic ring aerobic dehydrogenation based on ionic liquid porous carbon material

-

Paragraph 0057-0060, (2022/01/24)

The invention discloses a method for catalyzing nitrogen heterocycle aerobic dehydrogenation based on an ionic liquid porous carbon material, and is suitable for the field of organic synthesis. A heterogeneous catalysis system takes nitrogen heterocycle and derivatives thereof as substrates, a carbon material as a catalyst, water or ethanol as a solvent and air or oxygen spheres as an oxygen source, and a reaction is carried out at 0-80 DEG C under normal pressure, oxidative dehydrogenation of nitrogen heterocyclic compounds can be realized, and target products such as indole, quinoline, isoquinoline, quinazoline, quinoxaline, benzothiazole, Hanus ester and derivatives thereof and other medical intermediates can be synthesized. The non-metal catalyst is prepared by using the ionic liquid as the precursor, no activating agent or other additives are used in the reaction process, and the method has industrial application prospects.

Efficient access to quinolines and quinazolines by ruthenium complexes catalyzed acceptorless dehydrogenative coupling of 2-aminoarylmethanols with ketones and nitriles

Feng, Qi,Han, Zhangang,Hao, Zhiqiang,Huo, Shuaicong,Kong, Siqi,Lin, Jin,Lu, Guo-Liang,Zeng, Guang

, (2021/09/08)

Treatment of N,N,O-tridentate pyrazolyl-pyridinyl-alcohol ligands, 2-(CR1R2OH)-6-[3,5-(R3)2C3HN2]C5H3N (R1 = R2 = Me, R3 = H (L1H); R1 = Me, R2 = Ph, R3 = H (L2H); R1 = R2 = Ph, R3 = H (L3H); R1 = R2 = R3 = Me (L4H)) with RuCl3?xH2O in refluxing EtOH afforded the corresponding Ru(III) complexes L2RuCl (1a-1d), which were well characterized by IR, HR-MS and X-ray single crystal structural determination. These Ru complexes showed similarly high catalytic performance for both dehydrogenative couplings of 2-aminoarylmethanols with ketones and nitriles, giving the quinolines and quinazolines in good to excellent yields. This protocol provides an atom-economical and sustainable route to access various structurally important quinoline and quinazoline derivatives by using phosphine-free ligand based Ru catalysts.

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