ChemicalBook CAS DataBase List 4,7-Dichloroquinazoline

4,7-Dichloroquinazoline synthesis

5synthesis methods

Product Name:4,7-Dichloroquinazoline
CAS Number:2148-57-4
Molecular formula:C8H4Cl2N2
Molecular Weight:199.04

31374-18-2 Synthesis

31374-18-2
163 suppliers
$13.00/1g

2148-57-4
126 suppliers
$9.00/100mg

Yield:2148-57-4 94.828%

Reaction Conditions:

with trichlorophosphate at 100; for 3 h;

Steps:

11.1 Example 11 Step 1 - synthesis of 4,7-dichloroquinazoline (171)
7-Chloro-3H- quinazolin-4-one (170, 0.155 g, 0.85830 mmol) was dissolved in 1 mL of POCI3 in a screw cap vial. The vial was sealed and placed in a 100 °C oil bath for 3 hours. The resulting solution was concentrated under vacuum and co-concentrated from toluene three times to provide the desired compound (171, 0.162 g, 0.81391 mmol, 94.828%). MS: 199.0 m/z (M+H)⁺.

References:

ELAN PHARMACEUTICALS, INC.;XU, Ying-Zi;ARTIS, Dean, R.;BOWERS, Simeon;HOM, Roy, K.;SHAM, Hing, L.;YUAN, Shendong WO2013/142613, 2013, A1 Location in patent:Page/Page column 175

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31374-18-2 Synthesis

31374-18-2
163 suppliers
$13.00/1g

2148-57-4
126 suppliers
$9.00/100mg

References

89-77-0 Synthesis