Acetic Acid → 1-Benzothiazol-6-yl-3-(4-cyclopropylaminomethyl-pyridin-3-yl)-imidazolidin-2-one

HRID 80239Notes

Reaction equation

HRID 80239 reaction equation
[S:1]1[C:5]2[CH:6]=[C:7]([N:10]3[CH2:14][CH2:13][N:12]([C:15]4[CH:16]=[N:17][CH:18]=[CH:19][C:20]=4[CH:21]=O)[C:11]3=[O:23])[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].[CH:38]1([NH2:41])[CH2:40][CH2:39]1.C(O)(=O)C>C(Cl)(Cl)Cl.CO>[S:1]1[C:5]2[CH:6]=[C:7]([N:10]3[CH2:14][CH2:13][N:12]([C:15]4[CH:16]=[N:17][CH:18]=[CH:19][C:20]=4[CH2:21][NH:41][CH:38]4[CH2:40][CH2:39]4)[C:11]3=[O:23])[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 69828CyclopropylamineHCID 5049666Sodium triacetoxyborohydrideHCID 596362723-(3-Benzothiazol-6-yl-2-oxo-imidazolidin-1-yl)-pyridine-4-carbaldehyde

Product 1

HCID 498726531-Benzothiazol-6-yl-3-(4-cyclopropylaminomethyl-pyridin-3-yl)-imidazolidin-2-oneYield 11.6%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6212ChloroformSolvent

Procedure

3-(3-Benzothiazol-6-yl-2-oxo-imidazolidin-1-yl)-pyridine-4-carbaldehyde (I-177b: 100 mg, 0.3083 mmol) was reacted with NaBH(OAc)3 (98 mg, 0.4624 mmol), Cyclopropylamine (0.032 mL, 0.462 mmol) and acetic acid (5 mL) at room temperature for 12 hours to afford the crude product. The reaction was monitored by TLC (5% methanol in chloroform). Purification by column chromatography on silica gel (2% methanol in chloroform) followed by preparative HPLC afforded 13 mg of the product (11.6% yield).

Workup

  1. customto afford the crude product
  2. customPurification by column chromatography on silica gel (2% methanol in chloroform)

Sources & evidence

ORD record
ord-5f5212f3b9934820b7b4d44641088965
Source dataset
uspto-grants-2014_09
Patent number
USRE045173E1

Reaction notes

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