Diisopropylethylamine → ethyl 2-((R)-1-(3-chlorophenyl)-1-((R)-1-((S)-1-cyclohexyl-3-(methyl((2-(trimethylsilyl)ethoxy)carbonyl)amino)propan-2-ylcarbamoyl)piperidin-3-yl)ethoxy)acetate

HRID 451914Notes

Reaction equation

HRID 451914 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C@@:8]([C@@H:17]2[CH2:22][CH2:21][CH2:20][NH:19][CH2:18]2)([O:10][CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13])[CH3:9])[CH:5]=[CH:6][CH:7]=1.[CH:23]1([CH2:29][C@H:30]([NH:43][C:44](=O)[O:45]C2C=CC([N+]([O-])=O)=CC=2)[CH2:31][N:32]([CH3:42])[C:33]([O:35][CH2:36][CH2:37][Si:38]([CH3:41])([CH3:40])[CH3:39])=[O:34])[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1.CCN(C(C)C)C(C)C>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[C:4]([C@@:8]([C@@H:17]2[CH2:22][CH2:21][CH2:20][N:19]([C:44](=[O:45])[NH:43][C@H:30]([CH2:31][N:32]([CH3:42])[C:33]([O:35][CH2:36][CH2:37][Si:38]([CH3:41])([CH3:40])[CH3:39])=[O:34])[CH2:29][CH:23]3[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]3)[CH2:18]2)([O:10][CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13])[CH3:9])[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 59201559ethyl 2-((R)-1-(3-chlorophenyl)-1-((R)-piperidin-3-yl)ethoxy)acetateHCID 59382919(S)-4-nitrophenyl 1-cyclohexyl-3-(methyl((2-(trimethylsilyl)ethoxy)carbonyl)amino)propan-2-ylcarbamate

Product 1

HCID 68715559ethyl 2-((R)-1-(3-chlorophenyl)-1-((R)-1-((S)-1-cyclohexyl-3-(methyl((2-(trimethylsilyl)ethoxy)carbonyl)amino)propan-2-ylcarbamoyl)piperidin-3-yl)ethoxy)acetateYield 47%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of ethyl 2-((R)-1-(3-chlorophenyl)-1-((R)-piperidin-3-yl)ethoxy)acetate, (S)-4-nitrophenyl 1-cyclohexyl-3-(methyl((2-(trimethylsilyl)ethoxy)carbonyl)amino)propan-2-ylcarbamate (0.096 g, 0.20 mmol), and DIPEA (1 mL) in CH2Cl2 was stirred at rt for 24 h. After the reaction mixture was evaporated under reduced pressure, the crude product was purified by reversed-phase HPLC to afford 0.0425 g (47% in two steps) of ethyl 2-((R)-1-(3-chlorophenyl)-1-((R)-1-((S)-1-cyclohexyl-3-(methyl((2-(trimethylsilyl)ethoxy)carbonyl)amino)propan-2-ylcarbamoyl)piperidin-3-yl)ethoxy)acetate. MS ESI +ve m/z 668 (M+H).

Workup

  1. customAfter the reaction mixture was evaporated under reduced pressure
  2. customthe crude product was purified by reversed-phase HPLC

Sources & evidence

ORD record
ord-3e5da89a537041389a95ee954e259d84
Source dataset
uspto-grants-2013_07
Patent number
US08487108B2

Reaction notes

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