Diisopropylethylamine → 7,7-dimethyl-5-(2-nitrophenylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxamide

HRID 468673Notes

Reaction equation

HRID 468673 reaction equation
[CH3:1][C:2]1([CH3:26])[CH2:7][N:6]([S:8]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[N+:17]([O-:19])=[O:18])(=[O:10])=[O:9])[CH2:5][C:4]2[CH:20]=[C:21]([C:23]([OH:25])=O)[S:22][C:3]1=2.CCN(C(C)C)C(C)C.[O:36]1[CH2:41][CH2:40][CH2:39][CH2:38][CH:37]1[O:42][NH2:43].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>>[CH3:1][C:2]1([CH3:26])[CH2:7][N:6]([S:8]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[N+:17]([O-:19])=[O:18])(=[O:9])=[O:10])[CH2:5][C:4]2[CH:20]=[C:21]([C:23]([NH:43][O:42][CH:37]3[CH2:38][CH2:39][CH2:40][CH2:41][O:36]3)=[O:25])[S:22][C:3]1=2

Participants

5

Reactant 4

HCID 81531DiisopropylethylamineHCID 5142091O-(Tetrahydropyran-2-yl)hydroxylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 669317517,7-Dimethyl-5-(2-nitrophenylsulfonyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxylic acid

Product 1

HCID 866513227,7-dimethyl-5-(2-nitrophenylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxamideYield 94.8%

Conditions

Temperature
0 °C

Procedure

A solution of 7,7-dimethyl-5-(2-nitrophenylsulfonyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carboxylic acid (20 g, 50 mmol) was cooled to 0° C. DIPEA (32.3 g, 250 mmol) was added and the solution was stirred at 0° C. for 30 minutes. O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (5.8 g, 50 mmol) and HATU (22.8 g, 60 mmol) were then added and the reaction was allowed to warm to room temperature overnight. The reaction mixture was washed with water, brine and dried over anhydrous Na2SO4, concentrated and purified by silica gel chromatography (20-50% EtOAc/hexane) to afford product (23.5 g, 94%). LCMS (FA) ES+ 496; 1H NMR (400 MHz, DMSO) δ 11.60 (s, 1H), 8.10 (dd, J=7.7, 1.5 Hz, 1H), 8.02 (dd, J=7.7, 1.5 Hz, 1H), 7.90 (dtd, J=17.6, 7.5, 1.4 Hz, 2H), 7.41 (s, 1H), 4.92 (s, 1H), 4.33 (s, 2H), 4.00 (s, 1H), 3.50 (d, J=11.1 Hz, 1H), 3.38 (s, 2H), 1.72 (d, J=22.2 Hz, 3H), 1.53 (s, 3H), 1.27 (s, 6H).

Workup

  1. temperatureto warm to room temperature overnight
  2. washThe reaction mixture was washed with water, brine
  3. dry with materialdried over anhydrous Na2SO4
  4. concentrationconcentrated
  5. custompurified by silica gel chromatography (20-50% EtOAc/hexane)

Sources & evidence

ORD record
ord-3d056f52b12d46cf9df97633a4bb7488
Source dataset
uspto-grants-2014_01
Patent number
US08624040B2

Reaction notes

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