Pivaloyl chloride → HCID 86641976, compound

HRID 2363520Notes

Reaction equation

HRID 2363520 reaction equation
[CH3:1][NH:2][C@H:3]([C:8]([NH:10][C@H:11]1[C@H:18]2[C@H:14]([CH2:15][N:16]([CH2:19][C:20]3[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:28])[F:27])[CH:21]=3)[CH2:17]2)[CH2:13][CH2:12]1)=[O:9])[CH2:4][CH:5]([CH3:7])[CH3:6].C(N(CC)C(C)C)(C)C.[C:39](Cl)(=[O:44])[C:40]([CH3:43])([CH3:42])[CH3:41]>ClCCl>[CH3:41][C:40]([CH3:43])([CH3:42])[C:39]([N:2]([CH3:1])[C@H:3]([C:8]([NH:10][C@H:11]1[C@H:18]2[C@H:14]([CH2:15][N:16]([CH2:19][C:20]3[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:27])[F:28])[CH:21]=3)[CH2:17]2)[CH2:13][CH2:12]1)=[O:9])[CH2:4][CH:5]([CH3:7])[CH3:6])=[O:44]

Participants

5

Reactant 3

HCID 62493Pivaloyl chlorideHCID 81531DiisopropylethylamineHCID 66591069HCID 66591069, compound

Product 1

HCID 86641976HCID 86641976, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To N2-methyl-N1-{(3aS,4R,6aR)-2-[3-(trifluoromethyl)benzyl]octahydrocyclopenta[c]pyrrol-4-yl}-L-leucinamide (38.9 mg, 0.095 mmol) from Example 166 in dichloromethane (0.5 mL) was added N,N-diisopropylethylamine (24.77 μL, 0.142 mmol) followed by pivaloyl chloride (12.79 μL, 0.104 mmol), and the resultant reaction mixture was stirred at room temperature overnight. The reaction was reduced in volume and loaded onto a silica gel cartridge (Analogix®, Burlington, Wis., RS-4). The title compound was eluted with a gradient of 0% to 100% ethyl acetate/hexanes over 15 minutes: 1H NMR (500 MHz, pyridine-d5) δ ppm 7.81 (d, J=7.4, 1H), 7.74 (s, 1H), 7.60-7.55 (m, 2H), 7.43 (dd, J=6.6, 14.3, 1H), 5.45 (dd, J=7.0, 8.7, 1H), 4.35-4.29 (m, 1H), 3.57 (d, J=13.5, 1H), 3.44 (d, J=13.5, 1H), 3.13 (s, 3H), 2.73 (dd, J=2.6, 8.9, 1H), 2.53-2.45 (m, 1H), 2.41 (ddd, J=2.7, 8.3, 12.0, 1H), 2.37-2.32 (m, 1H), 2.29 (dd, J=3.0, 9.0, 1H), 2.26-2.21 (m, 1H), 2.05 (dq, J=6.0, 12.0, 1H), 1.86-1.80 (m, 3H), 1.55 (ddd, J=6.9, 12.8, 19.6, 2H), 1.41-1.31 (m, 1H), 1.30 (s, 9H), 0.88 (d, J=6.7, 3H), 0.82 (d, J=6.6, 3H); MS (ESI+) m/z 496 (M+H)+.

Workup

  1. customthe resultant reaction mixture
  2. washThe title compound was eluted with a gradient of 0% to 100% ethyl acetate/hexanes over 15 minutes

Sources & evidence

ORD record
ord-dafd2c42459040db8a3393184a2dbabf
Source dataset
uspto-grants-2014_04
Patent number
US08691865B2

Reaction notes

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