Toluene → HCID 24856032, compound

HRID 606007Notes

Reaction equation

HRID 606007 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([CH:8]=[C:9]([C:11]3[CH:20]=[CH:19][C:18]4[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=4)[CH:12]=3)[N:10]=2)[CH:7]=1.[OH:21][CH2:22][C:23]1[CH:24]=[C:25](B(O)O)[CH:26]=[CH:27][CH:28]=1.C1(C)C=CC=CC=1.C(=O)([O-])[O-].[Na+].[Na+]>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.ClCCl.C(#N)C>[CH:12]1[C:13]2[C:18](=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH:19]=[CH:20][C:11]=1[C:9]1[N:10]=[C:5]2[CH:4]=[CH:3][C:2]([C:27]3[CH:28]=[C:23]([CH2:22][OH:21])[CH:24]=[CH:25][CH:26]=3)=[CH:7][N:6]2[CH:8]=1

Participants

8

Reactant 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 2734662[3-(Hydroxymethyl)phenyl]boronic acidHCID 56697580HCID 56697580, compound

Product 1

HCID 24856032HCID 24856032, compoundYield 406%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolvent

Procedure

Under a stream of nitrogen, 500 mg of 6-bromo-2-(naphthalen-2-yl)imidazo[1,2-a]pyridine, 235 mg of 3-(hydroxymethyl)phenylboronic acid and 90 mg of tetrakis(triphenylphosphine)palladium are placed in a microwave tube containing 5 ml of toluene degassed beforehand under a stream of nitrogen, 5 ml of acetonitrile and 6 ml of a 0.5M solution of sodium carbonate. The tube is placed in a microwave apparatus and irradiated at 150° C. for 15 min. The organic phase is separated and dried and the filtrate is concentrated under reduced pressure. The residue obtained is taken up with 5 ml of dichloromethane. A precipitate forms and is recovered by filtration, washed with dichloromethane and then with diisopropyl ether and dried under reduced pressure. The experiment is repeated several times (6) and the solids are combined. 2.2 g of compound are obtained and are recrystallized from a 1/1 n-propanol/water mixture. The precipitate is filter-dried, washed with diisopropyl ether and dried under reduced pressure. 1.96 g of compound are obtained. Mp=161-163° C. 1H NMR (DMSO-d6, δ in ppm): 4.58 (d, J=5.5 Hz, 2H); 5.24 (t, J=5.7 Hz, 1H); from 7.29 to 7.73 (m, 8H); from 7.86 to 8.13 (m, 4H); 8.52 (m, 2H); 8.84 (m, 1H). M+H=351.

Workup

  1. customirradiated at 150° C. for 15 min
  2. customThe organic phase is separated
  3. customdried
  4. concentrationthe filtrate is concentrated under reduced pressure
  5. customThe residue obtained
  6. filtrationA precipitate forms and is recovered by filtration
  7. washwashed with dichloromethane
  8. dry with materialwith diisopropyl ether and dried under reduced pressure

Sources & evidence

ORD record
ord-be625267b7ae4f62946f9ac25e99d888
Source dataset
uspto-grants-2011_03
Patent number
US07915284B2

Reaction notes

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