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Chemical Structure| 117810-52-3 Chemical Structure| 117810-52-3

Structure of 117810-52-3

Chemical Structure| 117810-52-3

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Product Details of [ 117810-52-3 ]

CAS No. :117810-52-3
Formula : C7H12N2O
M.W : 140.18
SMILES Code : O=C1CCC2CNCCN21
MDL No. :MFCD08752614
InChI Key :BHFXPKPIPBNKFI-UHFFFAOYSA-N
Pubchem ID :10820612

Safety of [ 117810-52-3 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H314
Precautionary Statements:P280-P305+P351+P338-P310
Class:8
UN#:3259
Packing Group:

Computational Chemistry of [ 117810-52-3 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 0
Fraction Csp3 0.86
Num. rotatable bonds 0
Num. H-bond acceptors 2.0
Num. H-bond donors 1.0
Molar Refractivity 45.26
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

32.34 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.44
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

-0.8
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

-1.18
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

-0.05
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

0.54
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

-0.01

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-0.21
Solubility 87.4 mg/ml ; 0.624 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

0.6
Solubility 558.0 mg/ml ; 3.98 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Highly soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-0.84
Solubility 20.4 mg/ml ; 0.145 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

Low
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-7.72 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.74

Application In Synthesis of [ 117810-52-3 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 117810-52-3 ]

[ 117810-52-3 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 117810-66-9 ]
  • [ 117810-52-3 ]
  • 2-[8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl]hexahydropyrrolo[1,2-a]pyrazin-6(2H)-one [ No CAS ]
  • 2
  • [ 891782-61-9 ]
  • [ 117810-52-3 ]
  • 3
  • [ 349-88-2 ]
  • [ 117810-52-3 ]
  • Unifiram [ No CAS ]
  • 4
  • [ 100-39-0 ]
  • [ 117810-52-3 ]
  • [ 141856-04-4 ]
  • 5
  • [ 403-43-0 ]
  • [ 117810-52-3 ]
  • 4-(4-fluorobenzoyl)-1,4-diazabicyclo[4.3.0]nonan-9-one [ No CAS ]
  • 6
  • [ 98-88-4 ]
  • [ 117810-52-3 ]
  • 4-Benzoyl-1,4-diazabicyclo[4.3.0]nonan-9-one [ No CAS ]
  • 7
  • [ 874-60-2 ]
  • [ 117810-52-3 ]
  • 4-(4-methylbenzoyl)-1,4-diazabicyclo[4.3.0]nonan-9-one [ No CAS ]
  • 8
  • [ 122-01-0 ]
  • [ 117810-52-3 ]
  • 2-(4-chloro-benzoyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 9
  • [ 100-07-2 ]
  • [ 117810-52-3 ]
  • 2-(4-methoxy-benzoyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 10
  • [ 122-04-3 ]
  • [ 117810-52-3 ]
  • 2-(4-nitro-benzoyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 11
  • [ 98-60-2 ]
  • [ 117810-52-3 ]
  • 2-(4-chloro-benzenesulfonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 12
  • [ 98-09-9 ]
  • [ 117810-52-3 ]
  • racemic-2-phenylsulfonyl-hexahydro-pyrrolo[1,2-a]pyrazin-6(2H)-one [ No CAS ]
  • 13
  • [ 98-59-9 ]
  • [ 117810-52-3 ]
  • 2-(toluene-4-sulfonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 14
  • [ 98-68-0 ]
  • [ 117810-52-3 ]
  • 2-(4-methoxy-benzenesulfonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 15
  • [ 459-46-1 ]
  • [ 117810-52-3 ]
  • (+/-)-4-(p-fluorobenzyl)-1,4-diazabicyclo[4.3.0]nonan-9-one [ No CAS ]
  • 16
  • [ 98-74-8 ]
  • [ 117810-52-3 ]
  • 2-(4-nitro-benzenesulfonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 17
  • methyl 1,4-dibenzyl-2-piperazin-3-acrylate [ No CAS ]
  • [ 117810-52-3 ]
  • 18
  • [ 25054-53-9 ]
  • [ 117810-52-3 ]
  • 2-(benzo[1,3]dioxole-5-carbonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 19
  • [ 10147-37-2 ]
  • [ 117810-52-3 ]
  • 2-(propane-2-sulfonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 20
  • [ 6761-70-2 ]
  • [ 117810-52-3 ]
  • 2-(2,3-dihydro-benzo[1,4]dioxine-6-carbonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 21
  • [ 117810-52-3 ]
  • [ 258503-93-4 ]
  • 2-(quinoxaline-6-carbonyl)-hexahydro-pyrrolo[1,2-<i>a</i>]pyrazin-6-one [ No CAS ]
  • 22
  • [ 221255-77-2 ]
  • [ 117810-52-3 ]
YieldReaction ConditionsOperation in experiment
97% at 190℃; for 2h; Tert-b tyl 3-(piperazin-2-yl)propanoate (3.4 g, 0.01585 mol, 1.0 eq) in a round bottomed flask was heated at 190C for 2 h while monitoring by TLC. After completion of starting material, the mixture was cooled and washed with hexane to obtain hexahydropyrrolo[l,2-fl]pyrazin-6(2H)-one (2.2 g, 97%) as pale brown solid.
  • 26
  • [ 401891-55-2 ]
  • [ 117810-52-3 ]
  • 2-[3,5-bis(trifluoromethyl)phenyl]-N,2-dimethyl-N-{4-(2-methylphenyl)-6-[6-oxohexahydropyrrolo[1,2-a]pyrazin-2(1H)-yl]-3-pyridinyl}propanamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
A 8 ml sealed vial was charged with 100 mg (0.161 mmoles) of 2-[3,5- bis(trifluoromethyl)phenyl]-Λ/-[6-chloro-4-(2-methylphenyl)-3-pyridinyl]-Λ/,2- dimethylpropanamide (WO 2005/002577), 67 mg (0.483 mmol) of hexahydropyrrolo[1 ,2- a]pyrazin-6(2H)-one (WO 2003/066635), 44.5 mg (0.322 mmol) of potassium carbonate; EPO <DP n="119"/>the reagents were dissolved in 0.8ml of DMSO. The reaction mixture was heated at 1800C for 36-48hrs and then added to a saturated NH4CI solution and back extracted with DCM; the crude material was purified on SPE cartridge (Silica) eluting with a gradient from cyclohexane/ethyl acetate 9:1 , to ethyl acetate 100% and affording 45 mg of the title compound as pale yellow solid. MS (ES/+): 619 [M+H]+NMR (DMSOd6): δ (ppm) 8.07-8.00 (m, 1 H); 7.81-7.77 (m, 1 H); 7.73-7.63 (m, 2H); 7.37- 7.21 (m, 4H); 6.61-6.56 (m, 1 H); 4.68-4.54 (m, 1 H); 4.33-4.19 (m, 1 H); 4.18-4.08 (d, 1 H); 3.78-3.67 (m, 1 H); 3.04-2.85 (m, 2H); 2.69-2.54 (t, 1 H); 2.53-2.42 9dd, 1 H); 2.42-2.33 (m, 3H); 2.33-2.23 (m, 1 H); 2.21-2.10 (m, 3H); 1.78.-1.66 (m, 1 H); 1.57-1.48 (m, 3H); 1.42-1.32 (m, 3H).
  • 27
  • [ 825643-73-0 ]
  • [ 117810-52-3 ]
  • 2-[3,5-bis(trifluoromethyl)phenyl]-N-{4-(4-fluoro-2-methylphenyl)-6-[6-oxohexahydropyrrolo[1,2-a]pyrazin-2(1H)-yl]-3-pyridinyl}-N,2-dimethylpropanamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
A 8 ml sealed vial was charged with 100 mg (0.187 mmoles) of 2-[3,5- bis(trifluoromethyl)phenyl]-Λ/-[6-chloro-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]-Λ/,2- dimethylpropanamide (WO 2005/002577), 78.6 mg (0.561 mmol) of hexahydropyrrolo[1 ,2- a]pyrazin-6(2H)-one (WO 2003/066635), 52 mg (0.374 mmol) of potassium carbonate; the reagents were dissolved in 0.8ml of DMSO. The reaction mixture was heated at 1800C for 36-48hrs and then added to a saturated NH4CI solution and back extracted with dichloromethane; the crude material was purified on SPE cartridge (Silica) eluting with a gradient from cyclohexane/ethyl acetate 9:1 , to ethyl acetate 100% and affording 71 mg of the title compound as pale yellow solid.MS (ES/+): 637 [M+H]+ EPO <DP n="118"/>NMR (DMSO-Cl6): δ (ppm) 8.01 (s, 1 H); 7.78 (s, 1 H); 7.65 (s, 2H); 7.05-6.87 (m, 3H); 6.52 (S, 1 H); 4.67-4.52 (m, 1 H); 4.32-4.19 (m, 1 H); 4.14-4.10 (d, 1 H); 3.77-3.64 (m, 1 H); 3.02- 2.84 (m, 2H); 2.61 (t, 1 H); 2.48-2.44 (dd, 2H); 2.41-2.33 (s, 3H); 2.30-2.22 (m, 1 H); 2.13 (s, 3H); 1.79-1.65 (m, 1 H); 1.53 (s, 3H); 1.38 (s, 3H)
  • 28
  • (3SR,4RS)-3-[(RS)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidine-1-carbonyl chloride [ No CAS ]
  • [ 117810-52-3 ]
  • 2-[(3SR,4RS)-3-[(RS)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidine-1-carbonyl]-hexahydro-pyrrolo[1,2-a]pyrazin-6-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
25% With triethylamine; In dichloromethane; To a stirred solution of (3SR,4RS)-3-[(RS)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidine-1-carbonyl chloride (22 mg, 0.051 mmol) in CH2Cl2 (3 mL) were added Et3N (0.015 ml, 0.11 mmol) and hexahydro-pyrrolo[1,2-a]pyrazin-6-one (commercially available) (9 mg, 0.064 mmol). Stirring was continued overnight, and the reaction mixture was concentrated under vacuo and directly purified by flash chromatography (SiO2, EtOAc) to yield 7 mg (25%) the title compound as light yellow oil. ES-MS m/e: 539.2 (M+H+).
YieldReaction ConditionsOperation in experiment
A solution of ethyl 1,4-dibenzyl-2-piperazine-3-acrylate (2.84 g) in abs. EtOH (40 mL) was hydrogenated over Pd/C 10% (1.42 g) at 3.5 atm. for 2 days. After filtration, the solution was concentrated to nearly 30 mL and heated to 70 C. for 16 hours until complete cyclization occurred. The solution was concentrated in vacuo and the residue was purified by flash chromatography (DCM/MeOH 7:3) to give the title compound (820 mg) as a pale yellow oil.
  • 30
  • [ 117810-52-3 ]
  • [ 141454-61-7 ]
  • [ 1226595-20-5 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; In N,N-dimethyl-formamide; at 20 - 60℃; Intermediate of Formula VI; N-(5-Bromo-pyridin-2-yl)-2-(6-oxo-hexahydro-pyrrolo[ 1 ,2-a]pyrazin-2-yl)-acetamide: N-(5- Bromo-2-pyridinyl)-2-chloroacetamide (253mg, l.Olmmol) was dissolved in DMF (5mL) at room temperature. Hexahydro-pyrrolo[l,2-a]pyrazin-6-one (142mg, l.Olmmol) (Christensen et. al. WO2008046882) was added followed by potassium carbonate (350mg, 2.53mmol). The reaction mixture was stirred overnight at 6O0C. The reaction mixture was cooled to room temperature, diluted with ethyl acetate (25mL), and transferred to a separatory funnel. The reaction mixture was washed with water (3 X 25mL). The organic phase was dried over magnesium sulfate, filtered through a pad of silica, then concentrated. The product was isolated by preparative thin layer chromatography eluting with 98/2 methylene chloride/methanol to afford 95mg of the title compound. 1H NMR (400 MHz, CDCl3) δ 9.47 (br s, IH), 8.34 (d, J = 2.3 Hz, IH), 8.18 (d, J = 9.0 Hz, IH), 7.82 (dd, J = 9.0 Hz, J = 2.3 Hz, IH), 4.13-4.05 (m, 2H), 3.83-3.74 (m, IH), 3.22 (dd, J = 15.4 Hz, J = 4.8 Hz, 2H), 3.07-2.96 (m, 2H), 2.91-2.86 (m, 2H), 2.48-2.39 (m, 2H), 2.33-2.17 (m, 2H), 1.68-1.57 (m, IH). ESI-MS m/z: 354.9 (M + H)+.
  • 31
  • [ 1335202-56-6 ]
  • [ 117810-52-3 ]
  • [ 1335202-27-1 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In ethanol; at 80 - 85℃; for 24h; PREPARATION 27 (±)-2-[8-(2-chlorophenyl)-9-(2-hydroxyethyl)-2-methyl-purin-6-yl]-1,3,4,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-6-one Charge a 500 mL three necked round bottomed flask with 2-[6-chloro-8-(2-chlorophenyl)-2-methyl-purin-9-yl]ethanol (13.3 g, 0.0412 mmol) and ethanol (200 mL), followed by <strong>[117810-52-3]2,3,4,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazin-6-one</strong> (6.365 g, 0.0453 mol) and triethylamine (14.8 mL, 3.5 eq). Heat the mixture to 80-85 C. for 24 h. Cool the reaction to room temperature and concentrate under vacuum to give a yellow solid as the crude product. Purify the crude material by column chromatography, using 400 g of silica gel and eluting with dichloromethane/methanol (50:1), to give the product as a yellow solid (13.3 g). 1H NMR (dmso-d6): δ 7.55-7.41 (m, 4H); 5.72 (bs, 2H); 4.16-3.92 (m, 3H); 3.71 (s, 2H); 3.71-3.68 (m, 1H); 3.02-2.93 (m, 2H); 2.74 (m, 1H); 2.70 (s, 3H); 2.44 (m, 2H); 2.32-2.29 (m, 1H); 1.76-1.69 (m, 1H).
  • 32
  • [ 35748-36-8 ]
  • [ 117810-52-3 ]
  • [ 1383453-36-8 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In dichloromethane; at 0 - 20℃; Synthesis of Example 1212-1A mixture of 3-nitrosalicyclic acid (5 g, 27.30 mmol), thionyl chloride (25 mL, 137.85 mmol) and N,N-dimethylformamide (two drops) is stirred at 70 C for 1 h. The solvent is evaporated under vacuum to leave a crude residue. A portion of this (2 g) is dissolved in dichloromethane (7 mL) and the solution cooled to 0 C. Triethylamine (1.5 mL, 10.70 mmol) is added followed by hexahydro- pyrrolo[l,2-a]pyrazin-6-one (500 mg, 3.57 mmol). The mixture is allowed to warm to room temperature and stirred overnight. The solvent is removed under reduced pressure and the crude residue purified by flash chromatography (Silica Gel, gradient: cyclohexane/ethyl acetate from 100:0 to 0: 100) to give compound 12-1.Yield: 900 mgES mass spectrum: [M+H]+ = 306Retention time: 0.74 min (HPLC Method 4)
With triethylamine; In dichloromethane; at 0 - 20℃; A mixture of 3-nitrosalicyclic acid (5 g, 27.30 mmol), thionyl chloride (25 mL, 137.85 mmol) and N,N-dimethylformamide (two drops) is stirred at 70 C. for 1 h. The solvent is evaporated under vacuum to leave a crude residue. A portion of this (2 g) is dissolved in dichloromethane (7 mL) and the solution cooled to 0 C. Triethylamine (1.5 mL, 10.70 mmol) is added followed by hexahydro-pyrrolo[1,2-a]pyrazin-6-one (500 mg, 3.57 mmol). The mixture is allowed to warm to room temperature and stirred overnight. The solvent is removed under reduced pressure and the crude residue purified by flash chromatography (Silica Gel, gradient: cyclohexane/ethyl acetate from 100:0 to 0:100) to give compound 12-1.Yield: 900 mgES mass spectrum: [M+H]+=306is Retention time: 0.74 min (HPLC Method 4)
  • 33
  • [ 1335202-38-4 ]
  • [ 117810-52-3 ]
  • [ 1446303-87-2 ]
  • 34
  • [ 117810-52-3 ]
  • 2-(4-aminophenyl)hexahydropyrrolo[1,2-a]pyrazin-6(2H)-one [ No CAS ]
  • 35
  • [ 350-46-9 ]
  • [ 117810-52-3 ]
  • 2-(4-nitrophenyl)hexahydropyrrolo[1,2-a]pyrazin-6(2H)-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
98% With potassium carbonate; In N,N-dimethyl-formamide; at 110℃; for 3h; To a solution of hexahydropyrrolo[l,2-a]pyrazin-6(2H)-one (2.2 g, 0.01571 mol, 1.0 eq) in DMF (20 mL) in a vial, l-fluoro-4-nitrobenzene (2.2 g, 0.01571 mol, 1.0 eq) and K2CO3 (6.5 g, 0.04714 mol, 3.0 eq) were added. The vial was sealed and the mixture heated at 110C for 3 h while monitoring by TLC. After completion of the starting material, the mixture was poured into ice water (50 mL) and extracted with DCM (3 x 150 mL). The organic layer was washed with water (50 mL), brine (50 mL), dried over anhydrous sodium sulphate and concentrated. The resulting residue was purified by column chromatography on silica gel (100-200) using methanol in DCM as the eluent. The product eluted at 4% methanol in DCM and the concentration of the fractions afforded 2-(4-nitrophenyl)hexahydropyrrolo[l,2-a]pyrazin-6(2H)-one (4.02 g, 98%) as pale yellow solid.
 

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Related Functional Groups of
[ 117810-52-3 ]

Amides

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Related Parent Nucleus of
[ 117810-52-3 ]

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