Ethanol → 4-hydroxymethyl-2-methyl-8-[2'-(1-tert-butyl-1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin-7-one

HRID 129014Notes

Reaction equation

HRID 129014 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[C:14]3[N:15]=[C:16]([CH3:21])[N:17]=[C:18]([CH2:19][OH:20])[C:13]=3[CH2:12][CH2:11][C:10]2=[O:22])=[CH:4][CH:3]=1.[C:23]([N:27]1[C:31]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=2B(O)O)=[N:30][N:29]=[N:28]1)([CH3:26])([CH3:25])[CH3:24].C([O-])([O-])=O.[Na+].[Na+].CCO>CCOC(C)=O.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.C1(C)C=CC=CC=1.O>[OH:20][CH2:19][C:18]1[C:13]2[CH2:12][CH2:11][C:10](=[O:22])[N:9]([CH2:8][C:5]3[CH:6]=[CH:7][C:2]([C:33]4[CH:34]=[CH:35][CH:36]=[CH:37][C:32]=4[C:31]4[N:27]([C:23]([CH3:26])([CH3:25])[CH3:24])[N:28]=[N:29][N:30]=4)=[CH:3][CH:4]=3)[C:14]=2[N:15]=[C:16]([CH3:21])[N:17]=1

Participants

9

Reactant 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 104737918-[(4-Bromophenyl)methyl]4-hydroxymethyl-2-methyl-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin-7-oneHCID 109447112-[(1-tert-Butyl)-1H-tetrazol-5-yl]phenylboronic acid

Product 1

HCID 193730024-hydroxymethyl-2-methyl-8-[2'-(1-tert-butyl-1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin-7-oneYield 90.4%

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 8-[(4-bromophenyl)methyl]-4-hydroxymethyl-2-methyl-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin-7-one (490 mg, 1.35 mmol), 2-[(1-tert-butyl)-1H-tetrazol-5-yl]phenylboronic acid (367 mg, 1.49 mmol) (prepared according to J. W. Ellingboe, et al. U.S. Pat. No. 5,149,699), Na2CO3 (287 mg, 2.71 mmol), tetrakis(triphenylphosphine)palladium(0) (78 mg, 0.07 mmol), EtOH (1 mL), water (2 mL), and toluene (6 mL) was heated under reflux for 23 h. The mixture was diluted with EtOAc, washed with saturated aqueous NaHCO3, brine, dried (MgSO4), and concentrated to give a yellow oil. Purification by flash chromatography (5% MeOH/CH2Cl2) gave 590 mg (90%) of product as an off-white foam. An analytical sample (40 mg) was crystallized from ether/acetone, mp 164°-166° C.

Workup

  1. customprepared
  2. temperatureunder reflux for 23 h
  3. washwashed with saturated aqueous NaHCO3, brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated
  6. customto give a yellow oil
  7. customPurification by flash chromatography (5% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-a3f8c773b8384c2fa4b2b408e25a2b3c
Source dataset
uspto-grants-1995_11
Patent number
US05466692

Reaction notes

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