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

HRID 1058803Notes

Reaction equation

HRID 1058803 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][C:35]1([CH3:41])[CH2:40][CH2:39][CH2:38][NH:37][CH2:36]1>ClCCl>[Cl:33][C:30]1[CH:29]=[CH:28][C:27]([C@@H:9]([C:6]2[CH:7]=[CH:8][C:3]([CH2:2][N:37]3[CH2:38][CH2:39][CH2:40][C:35]([CH3:41])([CH3:34])[CH2:36]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:32][CH:31]=1

Participants

4

Reactant 2

HCID 709423,3-DimethylpiperidineHCID 685858541-{(R)-[4-(chloromethyl)phenyl](4-chlorophenyl)methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidine

Product 1

HCID 101672351-{(R)-(4-chlorophenyl) [4-(3,3-dimethylpiperidin-1-ylmethyl)phenyl]methyl}-3-[(3,5-difluorophenyl)(methylsulfonyl)methylene]azetidineYield 69.5%

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 0.025 g of 3,3-dimethylpiperidine. 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 eluting with a dichloromethane and methanol mixture (95/5 by volume), collecting 2.5 cm3 fractions immediately after using this eluent mixture. Fractions 3 to 8 are combined and then concentrated to dryness under reduced pressure (2.7 kPa). 0.040 g of 1-{(R*)-(4-chlorophenyl)[4-(3,3-dimethylpiperidin-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): 0.94 (s, 6H), 1.21 (mt, 2H), from 1.50 to 1.65 (mt, 2H), 1.99 (broad s, 2H), 2.27 (unresolved complex, 2H), 2.81 (s, 3H), 3.36 (s, 2H), 3.85 (mt, 2H), 4.33 (mt, 2H), 4.49 (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. washeluting with a dichloromethane and methanol mixture (95/5 by volume)
  4. customcollecting 2.5 cm3 fractions immediately
  5. concentrationconcentrated to dryness under reduced pressure (2.7 kPa)

Sources & evidence

ORD record
ord-1a4baa14bda547cebaf05fcf3ca11e77
Source dataset
uspto-grants-2003_02
Patent number
US06518264B2

Reaction notes

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