Triethylamine → HCID 53701853, compound

HRID 2187432Notes

Reaction equation

HRID 2187432 reaction equation
[CH3:1][S:2]([O:5][C:6]1[CH:14]=[CH:13][C:9]([C:10]([OH:12])=O)=[CH:8][CH:7]=1)(=[O:4])=[O:3].[NH2:15][C@@H:16]1[CH2:25][CH2:24][C:23]2[C:18](=[C:19]([N:26]3[CH2:31][CH2:30][N:29]([CH3:32])[CH2:28][CH2:27]3)[CH:20]=[CH:21][CH:22]=2)[CH2:17]1.C(N(CC)CC)C>S(Cl)(Cl)=O.C(Cl)Cl>[CH3:32][N:29]1[CH2:30][CH2:31][N:26]([C:19]2[CH:20]=[CH:21][CH:22]=[C:23]3[C:18]=2[CH2:17][C@H:16]([NH:15][C:10](=[O:12])[C:9]2[CH:8]=[CH:7][C:6]([O:5][S:2]([CH3:1])(=[O:3])=[O:4])=[CH:14][CH:13]=2)[CH2:25][CH2:24]3)[CH2:27][CH2:28]1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 21240863HCID 21240863, compoundHCID 53960413(R)-2-amino-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydronaphthalene

Product 1

HCID 53701853HCID 53701853, compound

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 24386Thionyl ChlorideSolvent

Procedure

A suspension of 4-methylsulfonyloxybenzoic acid (0.60 g, 2.8 mmol; described in: Looker, J. H.; Hayes, C. H.; Thatcher, D. N. J. Am. Chem. Soc. 1957, 79, 741-4) in thionyl chloride (15 mL) was heated at reflux for 30 min (the mixture became homogeneous). The excess of thionyl chloride was evaporated in vacuo, the residue was treated with toluene and again the solvent was removed in vacuo. Crude acid chloride (110 mg, 0.47 mmol) was dissolved in methylene chloride (5 mL) and added dropwise to an ice-cooled solution of (R)-2-amino-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydronaphthalene (110 mg, 0.45 mmol) and triethylamine (94 μL, 0.68 mmol) in methylene chloride (20 mL). After the addition the reaction was allowed to stir at ambient temperature for 15 min and then washed with dilute aqueous sodium hydrogen carbonate. The phases were separated and the organic phase was dried (Na2SO4), filtered and evaporated in vacuo to give a crude product which was purified on a silica gel column using chloroform/ethanol saturated with NH3 (100:3) as the eluent. Yield: 160 mg (78%) of the title compound as white crystals: mp 199-200° C.; [α]21D −20° (c 1.0, chloroform); EIMS (70 eV) m/z (relative intensity) 443 (3, M+).

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 30 min (the mixture
  3. customThe excess of thionyl chloride was evaporated in vacuo
  4. additionthe residue was treated with toluene
  5. customagain the solvent was removed in vacuo
  6. additionAfter the addition the reaction
  7. washwashed with dilute aqueous sodium hydrogen carbonate
  8. customThe phases were separated
  9. dry with materialthe organic phase was dried (Na2SO4)
  10. filtrationfiltered
  11. customevaporated in vacuo

Sources & evidence

ORD record
ord-2d6592c62e214d04b0ef5d656fbe8b68
Source dataset
uspto-grants-2002_06
Patent number
US06410530B1

Reaction notes

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