Diethyl cyanophosphonate → tert-Butyl cis-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]-5-{[(1-isopropyl-1H-indazol-3-yl)carbonyl]amino}piperidine-1-carboxylate

HRID 602455Notes

Reaction equation

HRID 602455 reaction equation
[CH:1]([N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:6]([C:13]([OH:15])=O)=[N:5]1)([CH3:3])[CH3:2].[NH2:16][C@H:17]1[CH2:22][N:21]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[C@@H:20]([CH2:30][C:31]2([OH:37])[CH2:36][CH2:35][O:34][CH2:33][CH2:32]2)[CH2:19][CH2:18]1.C(N(CC)C(C)C)(C)C.C(P(=O)(OCC)OCC)#N>CN(C)C=O>[OH:37][C:31]1([CH2:30][C@H:20]2[CH2:19][CH2:18][C@@H:17]([NH:16][C:13]([C:6]3[C:7]4[C:12](=[CH:11][CH:10]=[CH:9][CH:8]=4)[N:4]([CH:1]([CH3:2])[CH3:3])[N:5]=3)=[O:15])[CH2:22][N:21]2[C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:36][CH2:35][O:34][CH2:33][CH2:32]1

Participants

6

Reactant 4

HCID 76257Diethyl cyanophosphonateHCID 81531DiisopropylethylamineHCID 106796951-Isopropyl-1H-indazole-3-carboxylic acidHCID 67269815tert-Butyl cis-5-amino-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylate

Product 1

HCID 67270163tert-Butyl cis-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]-5-{[(1-isopropyl-1H-indazol-3-yl)carbonyl]amino}piperidine-1-carboxylateYield 94.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of 1-isopropyl-1H-indazole-3-carboxylic acid (126 mg, 0.619 mmol), tert-butyl cis-5-amino-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylate (234 mg, 0.743 mmol, step 5 of Example 2), N,N-diisopropylethylamine (96 mg, 0.743 mmol) in N,N-dimethylformamide (3 mL) was added diethyl cyanophosphonate (121 mg, 0.743 mmol) at room temperature, and the mixture was stirred at the same temperature for 18 h. The mixture was concentrated under reduced pressure and the resulting residue was chromatographed on a column of silica gel eluting with n-hexane/ethyl acetate (1:1) to give 292 mg (94%) of the title compound as a colorless oil.

Workup

  1. concentrationThe mixture was concentrated under reduced pressure
  2. customthe resulting residue was chromatographed on a column of silica gel eluting with n-hexane/ethyl acetate (1:1)

Sources & evidence

ORD record
ord-2e63d05c5fa847c4bad503eeee96a9c0
Source dataset
uspto-grants-2011_03
Patent number
US07906532B2

Reaction notes

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