Triphenylphosphine → HCID 10169000, compound

HRID 1278805Notes

Reaction equation

HRID 1278805 reaction equation
CCOC(/N=N/C(OCC)=O)=O.[Br:13][C:14]1[CH:19]=[C:18]([C:20]2[C:32]3[C:31]([CH3:33])=[C:30]([CH3:34])[S:29][C:28]=3[C:27]([Br:35])=[C:26]3[C:21]=2[CH:22]=[CH:23][CH:24]=[CH:25]3)[CH:17]=[C:16]([Br:36])[C:15]=1[OH:37].O[C@@H:39]([CH2:44][C:45]1[CH:50]=[CH:49][CH:48]=[CH:47][CH:46]=1)[C:40]([O:42][CH3:43])=[O:41].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>CCOCC.C1C=CC=CC=1>[CH3:43][O:42][C:40](=[O:41])[C@H:39]([O:37][C:15]1[C:16]([Br:36])=[CH:17][C:18]([C:20]2[C:32]3[C:31]([CH3:33])=[C:30]([CH3:34])[S:29][C:28]=3[C:27]([Br:35])=[C:26]3[C:21]=2[CH:22]=[CH:23][CH:24]=[CH:25]3)=[CH:19][C:14]=1[Br:13])[CH2:44][C:45]1[CH:46]=[CH:47][CH:48]=[CH:49][CH:50]=1

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 5289077(S)-methyl 2-hydroxy-3-phenylpropanoateHCID 5462977Diethyl azodicarboxylateHCID 9893519HCID 9893519, compound

Product 1

HCID 10169000HCID 10169000, compoundYield 97.4%

Reagents, catalysts & solvents 2

HCID 241BenzeneSolventHCID 3283Diethyl EtherSolvent

Conditions

Temperature
80 °C

Procedure

Diethylazodicarboxylate (0.262 mL, 1.67 mmol) was added dropwise to a stirred, room temperature solution of 2,6-dibromo-4-(9-bromo-2,3-dimethyl-naphtho[2,3-b]thiophen-4-yl)-phenol (0.60 g, 1.11 mmol), and (S)-2-hydroxy-3-phenylpropionic acid, methyl ester (0.300 g, 1.67 mmol), triphenylphosphine (0.437 g, 1.67 mmol) and benzene (5 mL) and the solution was heated in an 80° C. oil bath for 6 h. Upon cooling to room temperature, the reaction mixture was diluted with ether and silica gel (30 mL) was added. The reaction mixture was concentrated and the silica adsorbate was flash chromatographed (95:5 petroleum ether:ethyl acetate) to provide the title compound as a white solid (0.76 g, 97%): mp 174-175° C.: NMR (DMSO-d6); δ 8.21 (ddd, J=8,1,1 Hz, 1H), 7.74 (d, J=2 Hz, 1H), 7.73 (d, J=2 Hz, 1H),7.67 (ddd, J=8, 6, 1 Hz, 1H), 7.53 (ddd, J=8, 7, 1 Hz, 1H), 7,43 (d, J=8 Hz, 1H), 7.35-7.24 (m, 5H), 5.11 (dd, J=7, 6 Hz, 1H), 3.61 (s, 3H), 3.43 (dd, 13, 6 Hz, 1H), 3.40 (dd, 13, 7 Hz, 1H), 2.44 (d, J=1 Hz, 3H), 1.60 (d, J=1 Hz, 3H); MS (+FAB): 3 bromine isotope pattern 700(20%), 702 (70%), 704 (75%), 706 (25%); Anal. Calc. for C30H23Br3O3S: C, 51.23, H, 3.30, N, 0.00. Found: C, 51.52, H, 3.36, N, 0.12.

Workup

  1. temperatureUpon cooling to room temperature
  2. additionwas added
  3. concentrationThe reaction mixture was concentrated
  4. customchromatographed (95:5 petroleum ether:ethyl acetate)

Sources & evidence

ORD record
ord-a1350fe94c24424ca18638393f89f5b6
Source dataset
uspto-grants-2002_09
Patent number
US06444670B2

Reaction notes

Loading…