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ChemicalBook CAS DataBase List CHEMBRDG-BB 4004231
61855-04-7

CHEMBRDG-BB 4004231 synthesis

3synthesis methods
-

Yield:61855-04-7 57%

Reaction Conditions:

with lithium hydroxide monohydrate;water in tetrahydrofuran at 20; for 16 h;

Steps:

31 Synthesis of I-A-32b

To a stirred solution of I-A-32a (120 mg, 0.64 mmol) in THF (5 mL) was added LiOEl.EhO (81.11 mg, 1.93 mmol) in water (0.50 mL) at RT and stirred for 16 h. The reaction mixture was evaporated and diluted with water (0.5 mL). The aqueous layer was cooled to 0-5 °C and acidified with 6M HC1 and stirred at RT for 30 min. Solid was filtered and dried to give I-A-32b (65 mg, 0.36 mmol, 57 % yield).

References:

WO2020/227097,2020,A1 Location in patent:Paragraph 000252

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