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ChemicalBook CAS DataBase List IFOSFAMIDE IMPURITY F
81485-04-3

IFOSFAMIDE IMPURITY F synthesis

2synthesis methods
5638-58-4 Synthesis
2-Chloro-1,3,2-oxazaphosphacyclohexane 2-oxide

5638-58-4
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IFOSFAMIDE IMPURITY F

81485-04-3
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Yield:81485-04-3 68.11 %

Reaction Conditions:

with potassium carbonate in 1,4-dioxane at 90;Temperature;

Steps:

1.2-4.2

2) take 76.20g (0.77mol) of 1,2-dichloroethane and 145.12g (1.05mol) of anhydrous potassium carbonate to 700mL of dioxane, mix well, add 108.84g (0.7mol) of compound I, heat to 90 °C and stir for N-alkylation reaction for 48h, after the reaction is completed, cooling, filtration, concentration, column chromatography, and then recrystallization with ether-cyclohexane mixture with a volume ratio of 1.8:1, This yields 103.95g compound II, with a yield of 68.11%.

References:

CN115505003,2022,A Location in patent:Paragraph 0037; 0041; 0046; 0049-0050

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