Triethylamine → HCID 57941523, compound

HRID 1438047Notes

Reaction equation

HRID 1438047 reaction equation
[C:1]([O:5][C:6]([N:8]([CH3:10])[NH2:9])=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:11][C:12]1[CH:17]=[C:16]([Cl:18])[CH:15]=[CH:14][C:13]=1B(O)O.C(N(CC)CC)C>ClCCCl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[C:1]([O:5][C:6]([N:8]([CH3:10])[NH:9][C:15]1[CH:14]=[CH:13][C:12]([Cl:11])=[CH:17][C:16]=1[Cl:18])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 2734659(2,4-Dichlorophenyl)boronic acidHCID 37482801-Boc-1-methylhydrazine2×

Product 1

HCID 57941523HCID 57941523, compoundYield 38.4%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 111,2-DichloroethaneSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of N-methyl-hydrazinecarboxylic acid tert-butyl ester (Intermediate 1; 0.50 g, 3.4 mmol), 2,4-dichlorophenylboronic acid (Lancaster; 645 mg, 3.4 mmol), copper(II) acetate (621 mg, 3.4 mmol) and triethylamine (480 μL, 3.4 mmol) in 1,2-dichloroethane (15 mL) was heated in an oil bath at 50° C. for 2 h. The mixture was allowed to cool, and it was then adsorbed onto silica gel and purified by chromatography using an ISCO 40 g column, eluting with 10% ethyl acetate/hexanes, to give N′-(2,4-dichloro-phenyl)-N-methyl-hydrazinecarboxylic acid tert-butyl ester (380 mg, 34%) as a colorless oil.

Workup

  1. temperatureto cool
  2. custompurified by chromatography
  3. washeluting with 10% ethyl acetate/hexanes

Sources & evidence

ORD record
ord-6462f94f27c34498a5da6701503c50da
Source dataset
uspto-grants-2009_11
Patent number
US07622492B2

Reaction notes

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