ChemicalBook CAS DataBase List Erlotinib iMpurity 2

Erlotinib iMpurity 2 synthesis

7synthesis methods

Product Name:Erlotinib iMpurity 2
CAS Number:299912-59-7
Molecular formula:C25H30ClN3O5
Molecular Weight:487.98

69088-96-6
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4-Chloro-6,7-bis(2-methoxyethoxy)quinazoline

183322-18-1
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$6.00/1g

299912-59-7
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Yield:299912-59-7 100%

Reaction Conditions:

in acetonitrile at 25; for 5 h;Inert atmosphere;Reflux;

Steps:

9

Example 9 - Synthesis of 3-Butyn-2-ol, 4-[3-[[6,7-bis(2-methoxyethoxy)-4-quinazolinyl]amine] phenyl]-2-methyl-, hydrochloride (1:1) of formula (II) - exemplifying the invention.; Synthesis scheme [Show Image] In a 500 ml flask provided with a thermometer there are introduced - in succession at 25°C and under nitrogen atmosphere - 1 5 g of 4-chloro-6,7-bis(2-methoxyethoxy)quinazoline of formula (III), 9.2 g of 4-(3-aminophenyl)-2-methyl-3-butyn-2-ol of formula (IV) and 225 mL of Acetonitrile. The mixture is heated at reflux for 5 hours. Upon completing the reaction the mixture is cooled to 0-5°C and maintained at that temperature under stirring for at least 1 hour. The suspension is filtered and the solid is washed using 15 mL of cold Acetonitrile. The product is dried under vacuum for at least 8 hours obtaining 23.4 g of product as a white solid for a molar yield equivalent to 100%.

References:

EP2433931,2012,A1 Location in patent:Page/Page column 11

50624-25-4 Synthesis