Diisopropylethylamine → (2S,4R)-methyl 1-((2S,3R)-2-(tert-butoxycarbonylamino)-3-ethyl-5-methylnon-8-enoyl)-4-hydroxypyrrolidine-2-carboxylate

HRID 1852201Notes

Reaction equation

HRID 1852201 reaction equation
[C:1]([O:5][C:6]([NH:8][CH:9]([C@H:13]([CH2:21][CH3:22])[CH2:14][CH:15]([CH3:20])[CH2:16][CH2:17][CH:18]=[CH2:19])[C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[OH:56][C@H:57]1[CH2:61][NH:60][C@H:59]([C:62]([O:64][CH3:65])=[O:63])[CH2:58]1>ClCCl>[C:1]([O:5][C:6]([NH:8][C@@H:9]([C@H:13]([CH2:21][CH3:22])[CH2:14][CH:15]([CH3:20])[CH2:16][CH2:17][CH:18]=[CH2:19])[C:10]([N:60]1[CH2:61][C@H:57]([OH:56])[CH2:58][C@H:59]1[C:62]([O:64][CH3:65])=[O:63])=[O:12])=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 7015125(4R)-4-Hydroxy-L-proline methyl esterHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 86683261(3R)-2-(tert-butoxycarbonylamino)-3-ethyl-5-methylnon-8-enoic acid

Product 1

HCID 86683260(2S,4R)-methyl 1-((2S,3R)-2-(tert-butoxycarbonylamino)-3-ethyl-5-methylnon-8-enoyl)-4-hydroxypyrrolidine-2-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of (3R)-2-(tert-butoxycarbonylamino)-3-ethyl-5-methylnon-8-enoic acid (2 g, 6.38 mmole) in dichloromethane (20 mL) was added DIPEA (1.93 mL, 19.19 mmole), HATU (2.42 g, 6.38 mmole) followed by (2S,4R)-methyl 4-hydroxypyrrolidine-2-carboxylate (1.15 g, 6.38 mmole) at room temperature. The reaction mixture was stirred at room temperature for 2 h. The reaction mass was diluted with DCM and washed with water. The organic layer was dried over anhydrous Na2SO4 and concentrated under reduced pressure to get crude compound. The crude compound was taken to the next step without further purification (1.5 g, 53.4%). MS: MS m/z 441.6 (M++1)

Workup

  1. washwashed with water
  2. dry with materialThe organic layer was dried over anhydrous Na2SO4
  3. concentrationconcentrated under reduced pressure
  4. customto get crude compound
  5. customThe crude compound was taken to the next step without further purification (1.5 g, 53.4%)

Sources & evidence

ORD record
ord-d9226276fdb4432091b80cb0dc1d0032
Source dataset
uspto-grants-2015_02
Patent number
US08957203B2

Reaction notes

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