Methyl chloroformate → HCID 59395006, compound

HRID 1465104Notes

Reaction equation

HRID 1465104 reaction equation
[CH:1]1([C:6]2[C:7]([OH:28])=[CH:8][C:9]([N+:25]([O-:27])=[O:26])=[C:10]([C:12]3[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:16][CH:17]=3)[CH:11]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.C(N(CC)CC)C.Cl[C:37]([O:39][CH3:40])=[O:38]>ClCCl>[CH:1]1([C:6]2[C:7]([O:28][C:37]([O:39][CH3:40])=[O:38])=[CH:8][C:9]([N+:25]([O-:27])=[O:26])=[C:10]([C:12]3[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:16][CH:17]=3)[CH:11]=2)[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

5

Reactant 3

HCID 6586Methyl chloroformateHCID 8471TriethylamineHCID 67453859HCID 67453859, compound

Product 1

HCID 59395006HCID 59395006, compoundYield 99.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Tert-butyl 4-(5-cyclopentyl-4-hydroxy-2-nitro-phenyl)-3,6-dihydro-2H-pyridine-1-carboxylate (596 mg, 1.53 mmol) was dissolved in dichloromethane (5 mL) and triethylamine (388 mg, 535 μL, 3.84 mmol) then treated dropwise with methyl chloroformate (178 μL, 2.301 mmol). The reaction was stirred for 5 min at room temperature and then concentrated in vacuo to tert-butyl 4-(5-cyclopentyl-4-(methoxycarbonyloxy)-2-nitrophenyl)-5,6-dihydropyridine-1(2H)-carboxylate (680 mg, 99% yield). The material was used without purification. LC/MS m/z 447.4 [M+H]+.

Sources & evidence

ORD record
ord-1b2ff6bdd4164fba95a2f26db0797e57
Source dataset
uspto-grants-2015_04
Patent number
US08999976B2

Reaction notes

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