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

HRID 1621798Notes

Reaction equation

HRID 1621798 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][C:15]([CH2:44][N:45]2[CH2:50][CH2:49][N:48]([S:51]([CH3:54])(=[O:53])=[O:52])[CH2:47][C@@H:46]2[CH3:55])=[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:41]=[CH:40][C:39]([O:42][CH3:43])=[CH:38][CH:37]=4)[N:19]=3)=[CH:16][C:15]([CH2:44][N:45]3[CH2:50][CH2:49][N:48]([S:51]([CH3:54])(=[O:52])=[O:53])[CH2:47][C@@H:46]3[CH3:55])=[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 66611277(S)-4-(2-fluoro-5-((2-methyl-4-(methylsulfonyl)piperazin-1-yl)methyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

Product 1

HCID 66611628(S)-4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-((2-methyl-4-(methylsulfonyl)piperazin-1-yl)methyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amineYield 81%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 5-fluoro-6-methoxypyridin-3-amine (3.34 g, 23.53 mmol) and (S)-4-(2-fluoro-5-((2-methyl-4-(methylsulfonyl)piperazin-1-yl)methyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (13.6 g crude from previous step) in THF (150 mL) at −10° C. was treated dropwise with LiHMDS (1.0 M in THF, Aldrich; 64.2 mL, 64.2 mmol) and the mixture was stirred for 30 min. The reaction was quenched with water and saturated NH4Cl(aq) (100 mL each) and diluted with EtOAc (50 mL). The organic layer was separated, and precipitated solids were collected by filtration. The filtered organic layer was then concentrated to minimal volume, and the precipitated brownish-yellow solid was collected by filtration and washed with a minimal amount of EtOAc. All collected solids were then combined, slurried in isopropanol, collected by filtration, and dried in vacuo to give (S)-4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-((2-methyl-4-(methylsulfonyl)piperazin-1-yl)methyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (9.678 g, 81% over 2 steps) as a yellow solid. m/z (ESI, +ve ion) 758 (M+H)+.

Workup

  1. customThe reaction was quenched with water and saturated NH4Cl(aq) (100 mL each)
  2. additiondiluted with EtOAc (50 mL)
  3. customThe organic layer was separated
  4. customprecipitated solids
  5. filtrationwere collected by filtration
  6. concentrationThe filtered organic layer was then concentrated to minimal volume
  7. filtrationthe precipitated brownish-yellow solid was collected by filtration
  8. washwashed with a minimal amount of EtOAc
  9. customAll collected solids
  10. filtrationcollected by filtration
  11. customdried in vacuo

Sources & evidence

ORD record
ord-ae51ae2a5b7c45e48f6e3155b0332cf4
Source dataset
uspto-grants-2014_07
Patent number
US08772480B2

Reaction notes

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