Diisopropylethylamine → N,N'-bis(tert-butoxycarbonyl)-N''-(2-chloro-5-(4-methoxypyridin-2-yl)phenyl)guanidine

HRID 1059968Notes

Reaction equation

HRID 1059968 reaction equation
[Cl:1][C:2]1[CH:8]=[CH:7][C:6]([C:9]2[CH:14]=[C:13]([O:15][CH3:16])[CH:12]=[CH:11][N:10]=2)=[CH:5][C:3]=1[NH2:4].[C:17]([O:21][C:22]([NH:24][C:25]([NH:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])=S)=[O:23])([CH3:20])([CH3:19])[CH3:18].C(N(C(C)C)CC)(C)C.[I-].C[N+]1C=CC=CC=1Cl>ClCCl>[C:31]([O:30][C:28]([NH:27][C:25]([NH:24][C:22]([O:21][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:23])=[N:4][C:3]1[CH:5]=[C:6]([C:9]2[CH:14]=[C:13]([O:15][CH3:16])[CH:12]=[CH:11][N:10]=2)[CH:7]=[CH:8][C:2]=1[Cl:1])=[O:29])([CH3:34])([CH3:33])[CH3:32]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 1670692-Chloro-1-methylpyridinium iodideHCID 5193990N,N'-Di-Boc-thioureaHCID 186675322-Chloro-5-(4-methoxypyridin-2-yl)aniline

Product 1

HCID 135710952N,N'-bis(tert-butoxycarbonyl)-N''-(2-chloro-5-(4-methoxypyridin-2-yl)phenyl)guanidineYield 42.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a suspension of 2-chloro-5-(4-methoxypyridin-2-yl)aniline (165 mg), N,N′-bis(tert-butoxycarbonyl)thiourea (233 mg) and diisopropylethylamine (0.28 ml) in dichloromethane (7 ml) was added 1-methyl-2-chloropyridinium iodide (232 mg), and the mixture was stirred for 16 hours. The mixture was diluted with dichloromethane, washed with water and brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography (silica gel 30 g, n-hexane:ethyl acetate=2:1) to give N,N′-bis(tert-butoxycarbonyl)-N″-(2-chloro-5-(4-methoxypyridin-2-yl)phenyl)guanidine (144 mg).

Workup

  1. washwashed with water and brine
  2. dry with materialdried over magnesium sulfate
  3. customevaporated under reduced pressure
  4. customThe residue was purified by column chromatography (silica gel 30 g, n-hexane:ethyl acetate=2:1)

Sources & evidence

ORD record
ord-3befb93036254b25bd1e8e613c467601
Source dataset
uspto-grants-2003_02
Patent number
US06521643B1

Reaction notes

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