3-Methoxypropanehydrazide → Tert-butyl (1-(4-(1-(2-methoxyethyl)-8-phenyl-4H-pyrido[2,3-b][1,2,4]triazolo[4,3-d][1,4]oxazin-7-yl)phenyl)cyclobutyl)carbamate

HRID 1509287Notes

Reaction equation

HRID 1509287 reaction equation
[C:1]([O:5][C:6](=[O:35])[NH:7][C:8]1([C:12]2[CH:17]=[CH:16][C:15]([C:18]3[C:19]([C:29]4[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=4)=[CH:20][C:21]4[NH:26][C:25](=S)[CH2:24][O:23][C:22]=4[N:28]=3)=[CH:14][CH:13]=2)[CH2:11][CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].[CH3:36][O:37][CH2:38][CH2:39][C:40]([NH:42][NH2:43])=O>CC1C=CC(C)=CC=1>[CH3:36][O:37][CH2:38][CH2:39][C:40]1[N:26]2[C:21]3[CH:20]=[C:19]([C:29]4[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=4)[C:18]([C:15]4[CH:16]=[CH:17][C:12]([C:8]5([NH:7][C:6](=[O:35])[O:5][C:1]([CH3:4])([CH3:3])[CH3:2])[CH2:11][CH2:10][CH2:9]5)=[CH:13][CH:14]=4)=[N:28][C:22]=3[O:23][CH2:24][C:25]2=[N:43][N:42]=1

Participants

4

Reactant 2

HCID 27597273-MethoxypropanehydrazideHCID 86683631Tert-butyl (1-(4-(7-phenyl-2-thioxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazin-6-yl)phenyl)cyclobutyl)carbamate

Product 1

HCID 86683657Tert-butyl (1-(4-(1-(2-methoxyethyl)-8-phenyl-4H-pyrido[2,3-b][1,2,4]triazolo[4,3-d][1,4]oxazin-7-yl)phenyl)cyclobutyl)carbamateYield 30%

Reagents, catalysts & solvents 1

HCID 7809P-XyleneSolvent

Conditions

Temperature
150 °C

Procedure

A suspension of tert-butyl(1-(4-(7-phenyl-2-thioxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazin-6-yl)phenyl)cyclobutyl)carbamate (100 mg, 0.205 mmol) and 3-methoxypropanehydrazide (48 mg, 0.410 mmol) in p-xylene (2 ml) was heated to 150° C. for 15 minutes under microwave irradiation. The resulting reaction mixture was concentrated to dryness under reduced pressure and purified by Biotage silica gel chromatography (gradient 0% to 20% ethyl acetate in cyclohexane) to give the title compound (33 mg, 30%). LCMS (Method D): RT=1.414 min, M+1=554. 1H NMR (500 MHz, CDCl3) δ 8.16 (1H, s), 7.27-7.36 (7H, m), 7.23-7.18 (2H, m), 5.60 (2H, s), 3.99 (2H, t), 3.43 (3H, s), 3.38 (2H, t), 2.57-2.40 (4H, m), 2.12-2.01 (1H, m), 1.87-1.77 (1H, m), 1.49-1.27 (9H, bs).

Workup

  1. customThe resulting reaction mixture
  2. concentrationwas concentrated to dryness under reduced pressure
  3. custompurified by Biotage silica gel chromatography (gradient 0% to 20% ethyl acetate in cyclohexane)

Sources & evidence

ORD record
ord-13de4e54173344679721e2381cd8dabf
Source dataset
uspto-grants-2015_12
Patent number
US09221838B2

Reaction notes

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