Lithium Hexamethyldisilazide → 4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

HRID 1621750Notes

Reaction equation

HRID 1621750 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([NH2:10])[CH:5]=[N:6][C:7]=1[O:8][CH3:9].F[C:12]1[C:17]([C:18]2[N:23]=[C:22]([CH3:24])[N:21]=[C:20]([N:25]([CH2:35][C:36]3[CH:41]=[CH:40][C:39]([O:42][CH3:43])=[CH:38][CH:37]=3)[CH2:26][C:27]3[CH:32]=[CH:31][C:30]([O:33][CH3:34])=[CH:29][CH:28]=3)[N:19]=2)=[CH:16][CH:15]=[CH:14][N:13]=1.[Li+].C[Si]([N-][Si](C)(C)C)(C)C>C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([NH:10][C:12]2[C:17]([C:18]3[N:23]=[C:22]([CH3:24])[N:21]=[C:20]([N:25]([CH2:26][C:27]4[CH:28]=[CH:29][C:30]([O:33][CH3:34])=[CH:31][CH:32]=4)[CH2:35][C:36]4[CH:37]=[CH:38][C:39]([O:42][CH3:43])=[CH:40][CH:41]=4)[N:19]=3)=[CH:16][CH:15]=[CH:14][N:13]=2)[CH:5]=[N:6][C:7]=1[O:8][CH3:9]

Participants

5

Reactant 3

HCID 2733832Lithium HexamethyldisilazideHCID 454803515-Fluoro-6-methoxypyridin-3-amineHCID 595482404-(2-fluoropyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

Product 1

HCID 666108724-(2-(5-fluoro-6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amineYield 116.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

A solution of THF (3 mL) containing 5-fluoro-6-methoxypyridin-3-amine (87 mg, 0.613 mmol) (Anichem) and 4-(2-fluoropyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (Example 52; 182 mg, 0.409 mmol) was cooled to 0° C. in an ice bath and treated dropwise with 1 M LiHMDS (1.226 mL, 1.226 mmol). The solution was stirred at this temperature for 1.5 h and quenched with a saturated solution of NH4Cl. The product was extracted with EtOAc (15 mL), dried over MgSO4, filtered and concentrated to give crude 4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (269.7 mg, 0.475 mmol) as a bright yellow amorphous solid which was used in the next step without further purification. m/z (ESI, +ve ion) 568.0 (M+H)+. 1H NMR (400 MHz, CDCl3) δ 11.94 (1H, s); 8.82 (1H, dd, J=7.8, 2.0Hz); 8.29 (1H, dd, J=4.8, 2.1 Hz); 8.05 (1H, dd, J=12.3, 2.2 Hz); 7.97 (1H, d, J=2.3 Hz); 7.20 (4H, dd, J=10.6, 8.6 Hz); 6.86 (4H, t, J=9.0 Hz); 6.78 (1H, dd, J=7.8, 4.7 Hz); 4.84 (2H, br s.); 4.83 (2H, br. s.); 4.01 (3H, s); 3.81 (3H, s); 3.79 (3H, s); 2.58 (3H, s).

Workup

  1. customquenched with a saturated solution of NH4Cl
  2. extractionThe product was extracted with EtOAc (15 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-5dd0f91299b64e979378a0cccb5656c5
Source dataset
uspto-grants-2014_07
Patent number
US08772480B2

Reaction notes

Loading…