1-Methylpiperazine → 1-{(R)-(4-chlorophenyl) [4-(4-methylpiperazin-1-ylmethyl)phenyl]methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidine

HRID 25201Notes

Reaction equation

HRID 25201 reaction equation
Cl[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C@H:9]([C:27]2[CH:32]=[CH:31][C:30]([Cl:33])=[CH:29][CH:28]=2)[N:10]2[CH2:13][C:12](=[C:14]([C:19]3[CH:24]=[C:23]([F:25])[CH:22]=[C:21]([F:26])[CH:20]=3)[S:15]([CH3:18])(=[O:17])=[O:16])[CH2:11]2)=[CH:5][CH:4]=1.[CH3:34][N:35]1[CH2:40][CH2:39][NH:38][CH2:37][CH2:36]1>ClCCl>[Cl:33][C:30]1[CH:31]=[CH:32][C:27]([C@@H:9]([C:6]2[CH:7]=[CH:8][C:3]([CH2:2][N:38]3[CH2:39][CH2:40][N:35]([CH3:34])[CH2:36][CH2:37]3)=[CH:4][CH:5]=2)[N:10]2[CH2:13][C:12](=[C:14]([C:19]3[CH:20]=[C:21]([F:26])[CH:22]=[C:23]([F:25])[CH:24]=3)[S:15]([CH3:18])(=[O:17])=[O:16])[CH2:11]2)=[CH:28][CH:29]=1

Participants

4

Reactant 2

HCID 531671-MethylpiperazineHCID 685858541-{(R)-[4-(chloromethyl)phenyl](4-chlorophenyl)methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidine

Product 1

HCID 103034821-{(R)-(4-chlorophenyl) [4-(4-methylpiperazin-1-ylmethyl)phenyl]methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidineYield 44.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

The operation is carried out as described in Example 87, starting with 0.05 g of 1-{(R*)-[4-(chloromethyl)phenyl](4-chlorophenyl)methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidine, form A isomer, 1.0 cm3 of dichloromethane, and 0.020 g of N-methylpiperazine. The crude product is chromatographed on a silica gel column (particle size 0.06-0.200 mm, diameter 8 mm, height 8 cm), eluting with 80 cm3 of dichloromethane and then with a dichloromethane and methanol mixture (95/5 by volume), collecting 2.5 cm3 fractions immediately after using this eluent mixture. Fractions 3 to 9 are combined and then concentrated to dryness under reduced pressure (2.7 kPa). 0.025 g of 1-{(R*)-(4-chlorophenyl)[4-(4-methylpiperazin-1-ylmethyl)phenyl]methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidine, form A isomer, is obtained in the form of a white foam [1H NMR spectrum (300 MHz, CDCl3, δ in ppm): 2.28 (s, 3H), from 2.30 to 2.60 (unresolved complex, 8H), 2.80 (s, 3H), 3.45 (s, 2H), 3.84 (mt, 2H), 4.33 (mt, 2H), 4.50 (s, 1H), 6.84 (tt, J=8.5 and 2.5 Hz, 1H), 6.98 (mt, 2H), from 7.20 to 7.40 (mt, 8H)].

Workup

  1. customThe crude product is chromatographed on a silica gel column (particle size 0.06-0.200 mm, diameter 8 mm, height 8 cm)
  2. washeluting with 80 cm3 of dichloromethane
  3. customwith a dichloromethane and methanol mixture (95/5 by volume), collecting 2.5 cm3 fractions immediately
  4. concentrationconcentrated to dryness under reduced pressure (2.7 kPa)

Sources & evidence

ORD record
ord-cdb7a5cc518748feb79b3c3bb889bd99
Source dataset
uspto-grants-2005_02
Patent number
US06858603B2

Reaction notes

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