Pyridine → (E)-2'-(3-chloropropylsulphonyl)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2'-isobutyl-4-methylvalerohydrazide

HRID 1386567Notes

Reaction equation

HRID 1386567 reaction equation
[O:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH:2]1[O:7][NH:8][C:9]([C@H:11]([C@@H:21]([CH2:30][CH:31]([CH3:33])[CH3:32])[C:22]([NH:24][NH:25][CH2:26][CH:27]([CH3:29])[CH3:28])=[O:23])[CH2:12]/[CH:13]=[CH:14]/[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)=[O:10].N1C=CC=CC=1.[Cl:40][CH2:41][CH2:42][CH2:43][S:44](Cl)(=[O:46])=[O:45]>ClCCl.C(OCC)(=O)C>[Cl:40][CH2:41][CH2:42][CH2:43][S:44]([N:25]([CH2:26][CH:27]([CH3:28])[CH3:29])[NH:24][C:22](=[O:23])[C@@H:21]([C@@H:11]([C:9](=[O:10])[NH:8][O:7][CH:2]1[CH2:3][CH2:4][CH2:5][CH2:6][O:1]1)[CH2:12]/[CH:13]=[CH:14]/[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:30][CH:31]([CH3:33])[CH3:32])(=[O:46])=[O:45]

Participants

6

Reactant 3

HCID 1049Pyridine2×HCID 154103-Chloropropanesulphonyl chloride2×HCID 86756879(E)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)-carbamoyl]-4-phenyl-3-butenyl]-2'-isobutyl-4-methylvalerohydrazide

Product 1

HCID 86757192(E)-2'-(3-chloropropylsulphonyl)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2'-isobutyl-4-methylvalerohydrazideYield 66.7%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 0.918 g of (E)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2′-isobutyl-4-methylvalerohydrazide in 10 ml of dichloromethane was treated with 0.202 ml of pyridine and 0.354 g of 3-chloropropanesulphonyl chloride. The mixture was stirred for 2 hours at room temperature. A further 0.177 g of 3-chloropropanesulphonyl chloride and 0.160 ml of pyridine were added and the mixture was stirred for a further 2 hours at room temperature. Evaporation gave a residue which was dissolved in ethyl acetate and washed in sequence with water, 5% aqueous citric acid, water, 5% aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride. Drying over anhydrous magnesium sulphate, evaporation, and trituration with ether/hexane gave a residue which was purified by column chromatography on silica gel using hexane/ethyl acetate (6:4) for the elution, to give 0.8 g of (E)-2′-(3-chloropropylsulphonyl)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2′-isobutyl-4-methylvalerohydrazide in the form of a pale yellow solid.

Workup

  1. stirringthe mixture was stirred for a further 2 hours at room temperature
  2. customEvaporation
  3. customgave a residue which
  4. washwashed in sequence with water, 5% aqueous citric acid, water, 5% aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride
  5. dry with materialDrying over anhydrous magnesium sulphate, evaporation, and trituration with ether/hexane
  6. customgave a residue which
  7. customwas purified by column chromatography on silica gel
  8. washfor the elution

Sources & evidence

ORD record
ord-6aac49417c114e94b6a613b1efd3b1af
Source dataset
uspto-grants-2001_07
Patent number
US06265446B1

Reaction notes

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