Triphenylphosphine → 4-(2,3-dimethylindol-5-ylamino)-6-methoxy-7-((E)-4-(pyrrolidin-1-yl)but-2-en-1-yloxy)quinazoline

HRID 454106Notes

Reaction equation

N(C(OCC)=O)=NC(OCC)=O.[CH3:13][C:14]1[NH:15][C:16]2[C:21]([C:22]=1[CH3:23])=[CH:20][C:19]([NH:24][C:25]1[C:34]3[C:29](=[CH:30][C:31]([OH:37])=[C:32]([O:35][CH3:36])[CH:33]=3)[N:28]=[CH:27][N:26]=1)=[CH:18][CH:17]=2.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[N:57]1([CH2:62]/[CH:63]=[CH:64]/[CH2:65]O)[CH2:61][CH2:60][CH2:59][CH2:58]1>CN(C=O)C.ClCCl>[CH3:13][C:14]1[NH:15][C:16]2[C:21]([C:22]=1[CH3:23])=[CH:20][C:19]([NH:24][C:25]1[C:34]3[C:29](=[CH:30][C:31]([O:37][CH2:65]/[CH:64]=[CH:63]/[CH2:62][N:57]4[CH2:61][CH2:60][CH2:59][CH2:58]4)=[C:32]([O:35][CH3:36])[CH:33]=3)[N:28]=[CH:27][N:26]=1)=[CH:18][CH:17]=2

Participants

Conditions

Temperature: 0 °C

Procedure

Diethyl azodicarboxylate (65 μl, 0.4 mmol) was added in portions to a suspension of 4-(2,3-dimethylindol-5-ylamino)-7-hydroxy-6-methoxyquinazoline (68 mg, 0.2 mmol), triphenylphosphine (107 mg, 0.4 mmol), (E)-4-(pyrrolidin-1-yl)but-2-en-1-ol (40 mg, 0.28 mmol) in DMF (0.4 ml) and dichloromethane (1.5 ml) cooled at 0° C. The reaction mixture was left to warm up to ambient temperature and was stirred overnight. The mixture was poured onto a column of silica and was eluted with methylene chloride followed by methylene chloride/methanol (98/2), followed by methylene chloride/3N ammonia in methanol (95/5 and 90/10) to give 4-(2,3-dimethylindol-5-ylamino)-6-methoxy-7-((E)-4-(pyrrolidin-1-yl)but-2-en-1-yloxy)quinazoline (51 mg, 55%).

Workup

waitThe reaction mixture was left
temperatureto warm up to ambient temperature
additionThe mixture was poured onto a column of silica
washwas eluted with methylene chloride

Sources & evidence

ORD record: ord-10ff0b9c307d4a18a301a7e0c74ffc2b
Source dataset: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08492560B2

Reaction notes

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