2-(3-Tert-butyl-5-methoxycarbonyl-benzyl)-2-[3-[(triphenyl-methyl)thio]propyl]malonic acid → 2-(3-Tert-butyl-5-methoxycarbonyl-benzyl)-5-[(triphenylmethyl)thio]-pentanoic acid

HRID 1356592Notes

Reaction equation

HRID 1356592 reaction equation
[C:1]([C:5]1[CH:6]=[C:7]([CH:39]=[C:40]([C:42]([O:44][CH3:45])=[O:43])[CH:41]=1)[CH2:8][C:9]([CH2:16][CH2:17][CH2:18][S:19][C:20]([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)(C(O)=O)[C:10]([OH:12])=[O:11])([CH3:4])([CH3:3])[CH3:2]>CS(C)=O>[C:1]([C:5]1[CH:6]=[C:7]([CH:39]=[C:40]([C:42]([O:44][CH3:45])=[O:43])[CH:41]=1)[CH2:8][CH:9]([CH2:16][CH2:17][CH2:18][S:19][C:20]([C:27]1[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=1)([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)[C:10]([OH:12])=[O:11])([CH3:4])([CH3:2])[CH3:3]

Participants

3

Reactant 1

HCID 121446622-(3-Tert-butyl-5-methoxycarbonyl-benzyl)-2-[3-[(triphenyl-methyl)thio]propyl]malonic acid

Product 1

HCID 121446632-(3-Tert-butyl-5-methoxycarbonyl-benzyl)-5-[(triphenylmethyl)thio]-pentanoic acidYield 94%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

A solution of 2-(3-tert-butyl-5-methoxycarbonyl-benzyl)-2-[3-[(triphenylmethyl)thio]propyl]-malonic acid XI (6.71 g, 11 mmol) in DMSO (10 ml) was stirred at 130° C. for 1.5 hours. The solvent was removed under reduced pressure and water was added to the residual oil. The precipitate was filtered off, washed with water, and dried under vacuum to afford 2-(3-tert-butyl-5-methoxycarbonyl-benzyl)-5-[(triphenylmethyl)thio]-pentanoic acid XII (5.86 g, 10.3 mmol, 94%) as a white solid: 1H NMR (CD3OD) δ 1.3 (s, 9H), 1.3-1.5 (m, 4H), 2.1 (m, 2H), 2.4 (m, 1H), 2.7 (m, 1H), 2.8 (m, 1H), 7.1-7.4 (m, 16H), 7.7 (s, 1H), 7.9 (s, 1H); 13C NMR (CD3OD) 627.4, 31.7 (3C), 32.3, 32.7, 35.6, 39.2, 48.4, 67.7, 125.7, 127.7, 128.6, 128.9, 130.8, 131.6, .132.0, 140.8, 146.3, 152.7, 170.3, 178.8.

Workup

  1. customThe solvent was removed under reduced pressure and water
  2. additionwas added to the residual oil
  3. filtrationThe precipitate was filtered off
  4. washwashed with water
  5. customdried under vacuum

Sources & evidence

ORD record
ord-bc33ba7cc8564dbcaf10772f0d381045
Source dataset
uspto-grants-2003_07
Patent number
US06586623B2

Reaction notes

Loading…