Benzoyl chloride → HCID 10903905, compound

HRID 1900223Notes

Reaction equation

[CH2:1]([O:3][CH:4]([O:6][C@H:7]1[C@@H:10]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[NH:9][C:8]1=[O:17])[CH3:5])[CH3:2].C([Li])CCC.[C:23](Cl)(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>C1COCC1.CCCCCC.C(=O)(O)[O-].[Na+]>[C:23]([N:9]1[C@H:10]([C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=2)[C@H:7]([O:6][CH:4]([O:3][CH2:1][CH3:2])[CH3:5])[C:8]1=[O:17])(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

Participants

Conditions

Temperature: -78 °C

Procedure

To a solution of 2.35 g (10 mmol) of cis-3-(1-ethoxyethoxy)-4-phenylazetidin-2-one in 40 mL of THF at -78° C. was added 6.1 mL (10.07 mmol) of a 1.65 M solution of n-butyllithium in hexane. The mixture was stirred for 10 min at -78° C. and a solution of 1.42 g (10.1 mmol) of benzoyl chloride in 10 mL of THF was added. The mixture was stirred at -78° C. for 1 h and diluted with 70 mL of saturated aqueous sodium bicarbonate and extracted with three 50 mL portions of ethyl acetate. The combined ethyl acetate extracts were dried over sodium sulfate and concentrated to give 3.45 g of an oil. Chromatography of the oil on silica gel eluted with ethyl acetate/hexane gave 3.22 g (95%) of cis-1-benzoyl-3-(1-ethoxyethoxy)-4-phenylazetidin-2-one (2) as a colorless oil.

Workup

stirringThe mixture was stirred at -78° C. for 1 h
extractionextracted with three 50 mL portions of ethyl acetate
dry with materialThe combined ethyl acetate extracts were dried over sodium sulfate
concentrationconcentrated

Sources & evidence

ORD record: ord-4d49304594114f4cabbbe42b50cc9bee
Source dataset: uspto-grants-1996_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05574156

Reaction notes

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