Tri-o-tolylphosphine → (E)-9-(2-(2-Chloro-4-methylpyridin-3-yl)vinyl)-N-(4-(dimethylphosphoryl)phenyl)-9H-purin-6-amine

HRID 655801Notes

Reaction equation

[CH3:1][P:2]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[N:20]=[CH:19][N:18]=[C:17]3[C:13]=2[N:14]=[CH:15][N:16]3[CH:21]=[CH2:22])=[CH:7][CH:6]=1)([CH3:4])=[O:3].[Cl:23][C:24]1[C:29](I)=[C:28]([CH3:31])[CH:27]=[CH:26][N:25]=1.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>CN(C=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[Cl:23][C:24]1[C:29](/[CH:22]=[CH:21]/[N:16]2[CH:15]=[N:14][C:13]3[C:17]2=[N:18][CH:19]=[N:20][C:12]=3[NH:11][C:8]2[CH:9]=[CH:10][C:5]([P:2]([CH3:1])([CH3:4])=[O:3])=[CH:6][CH:7]=2)=[C:28]([CH3:31])[CH:27]=[CH:26][N:25]=1

Participants

Conditions

Temperature: 120 °C

Procedure

N-(4-(Dimethylphosphoryl)phenyl)-9-vinyl-9H-purin-6-amine (Example 3, 1 mmol), 2-chloro-3-iodo-4-methylpyridine compound (1.3 mmol), disopropylethyl amine (3 mmol), palladium acetate (0.05 mmol), tri-o-tolylphosphine (0.1 mmol) in DMF (5 mL) was thoroughly purged with argon for 10-15 min. and sealed and heated for 120° C. for 18 h. until the starting materials disappeared. The reaction mix. was passed through celite, and washed with dichloromethane containing 30% methanol. The filtrate was concentrated in vacuo. The residue was purified by Biotage-S column chromatography using 1/1 hexane ethyl acetate, ethyl acetate and 1-10% methanol containing ethyl acetate: MS [M+H]+ 439.

Workup

customsealed
additionThe reaction mix
washwashed with dichloromethane containing 30% methanol
concentrationThe filtrate was concentrated in vacuo
customThe residue was purified by Biotage-S column chromatography
additioncontaining ethyl acetate

Sources & evidence

ORD record: ord-b64c1979b6d34b7297b2ebd2a3fa034b
Source dataset: uspto-grants-2011_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08071609B2

Reaction notes

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