Triethylamine → N-(3,5-Dichloro-benzyl)-2-(2,2-dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-N-methyl-acetamide

HRID 2214708Notes

Reaction equation

HRID 2214708 reaction equation
[CH3:1][C:2]1([CH3:12])[O:6][C:5](=[CH:7][C:8](Cl)=[O:9])[C:4](=[O:11])[O:3]1.Cl.[Cl:14][C:15]1[CH:16]=[C:17]([CH:21]=[C:22]([Cl:24])[CH:23]=1)[CH2:18][NH:19][CH3:20].CCN(CC)CC>C(Cl)Cl>[Cl:14][C:15]1[CH:16]=[C:17]([CH:21]=[C:22]([Cl:24])[CH:23]=1)[CH2:18][N:19]([CH3:20])[C:8](=[O:9])[CH:7]=[C:5]1[C:4](=[O:11])[O:3][C:2]([CH3:12])([CH3:1])[O:6]1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 174805Benzenemethanamine, 3,5-dichloro-N-methyl-, hydrochlorideHCID 85435482(2,2-Dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-acetyl chloride

Product 1

HCID 69655600N-(3,5-Dichloro-benzyl)-2-(2,2-dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-N-methyl-acetamideYield 100%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of (2,2-dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-acetyl chloride (0.96 g, 5 mmol) in CH2Cl2 (20 mL) was added a solution of 3,5-dichlorobenzyl-methylamine hydrochloride (1.133 g, 5 mmol) and Et3N (2 mL) in CH2Cl2 (25 mL). The addition flask was rinsed with CH2Cl2 (5 mL) and added to the reaction mixture. After 2 h, the reaction mixture was concentrated and the resulting residue was triturated with ether (100 mL), filtered and concentrated to give the desired product as a viscous brown oil (1.70 g, 100% yield). 1HNMR (300 MHz, CDCl3) δ: 7.30–7.27 (1H, m), 7.16 (1.5H, br s), 7.06 (0.5H, s), 6.17 (0.66H, s), 6.07 (0.34H, s), 4.59 (1.33H, s), 4.53 (0.67H, s), 3.03 (2H, s), 2.97 (1H, s), 1.74 (4H, s), 1.70 (2H,s).

Workup

  1. washThe addition flask was rinsed with CH2Cl2 (5 mL)
  2. additionadded to the reaction mixture
  3. concentrationthe reaction mixture was concentrated
  4. customthe resulting residue was triturated with ether (100 mL)
  5. filtrationfiltered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-4a8138d189534cfabd82e09fba9f1f88
Source dataset
uspto-grants-2006_09
Patent number
US07109186B2

Reaction notes

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