N-Hydroxyphthalimide → 2-{[1-(Diphenylmethyl)azetidin-3-yl]oxy}-1H-isoindole-1,3(2H)-dione

HRID 82956

Reaction equation

[CH:1]([N:14]1[CH2:17][CH:16]([OH:18])[CH2:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.O[N:20]1[C:24](=[O:25])[C:23]2=[CH:26][CH:27]=[CH:28][CH:29]=[C:22]2[C:21]1=[O:30].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[C:2]1([CH:1]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[N:14]2[CH2:17][CH:16]([O:18][N:20]3[C:24](=[O:25])[C:23]4[C:22](=[CH:29][CH:28]=[CH:27][CH:26]=4)[C:21]3=[O:30])[CH2:15]2)[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 0 °C

Procedure

To a solution of N-benzhydrylazetidin-3-ol (1.0 g, 4.18 mmol) in anhydrous THF (66 mL) under nitrogen were added N-hydroxyphthalimide (750 mg, 4.60 mmol) and triphenylphosphine (2.19 g, 8.36 mmol). The reaction mixture was cooled to 0° C. and DEAD (1.52 mL, 8.36 mmol) was added dropwise. The solution was allowed to warm to room temperature and stirred overnight. The reaction mixture was concentrated under reduced. The residue was purified on column chromatography (eluent: pentane/EtOAc 7/3 to 4/6) to give the title compound (600 mg, 37%) as a wax.

Workup

temperatureto warm to room temperature
concentrationThe reaction mixture was concentrated
customThe residue was purified on column chromatography (eluent: pentane/EtOAc 7/3 to 4/6)

Sources & evidence

ORD record: ord-8db0c46b33d045a3bf08d5ac027168f0
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846711B2

Linked notes

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