Water → Methanesulfonic acid 4-(6-methyl-benzo[b]naphtho[2,3-d]thiophen-11-yl)-phenyl ester

HRID 1873141Notes

Reaction equation

HRID 1873141 reaction equation
I[C:2]1[C:14]2[S:13][C:12]3[CH:15]=[CH:16][CH:17]=[CH:18][C:11]=3[C:10]=2[C:9]([C:19]2[CH:24]=[CH:23][C:22]([O:25][S:26]([CH3:29])(=[O:28])=[O:27])=[CH:21][CH:20]=2)=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[CH:7]2.[CH3:30][Sn](C)(C)C.O>CN(C)C=O.C1(C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)[Pd][P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:30][C:2]1[C:14]2[S:13][C:12]3[CH:15]=[CH:16][CH:17]=[CH:18][C:11]=3[C:10]=2[C:9]([C:19]2[CH:24]=[CH:23][C:22]([O:25][S:26]([CH3:29])(=[O:27])=[O:28])=[CH:21][CH:20]=2)=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[CH:7]2

Participants

6

Reactant 3

HCID 962WaterHCID 11661TetramethyltinHCID 15481264Methanesulfonic acid 4-(6-Iodo-benzo[b]naphtho[2,3-d]thiophen-11-yl)-phenyl ester

Product 1

HCID 15481266Methanesulfonic acid 4-(6-methyl-benzo[b]naphtho[2,3-d]thiophen-11-yl)-phenyl esterYield 86%

Reagents, catalysts & solvents 2

HCID 178419050HCID 178419050, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
103 °C

Procedure

A suspension of methanesulfonic acid 4-(6-iodo-benzo[b]naphtho[2,3-d]thiophen-11-yl)-phenyl ester (1.65 g, 3.11 mmole), tetramethyltin (3.58, 25.8 mmole), and bis(triphenylphosphine)palladium II chloride (0.218 g, 0.311 mmole 10 mole %) in dry N,N dimethylformamide (16 mL) was heated in a sealed vessel under argon at 103° C. for 4 hours and left at room temperature overnight. The reaction mixture was added to water (200 mL) and extracted with ether. Silica gel (40 mL) was added and the solvent removed. The adsorbate was flash chromatographed (85:15 Petroleum ether:ethyl acetate) to give the title compound as a pale yellow solid (1.12 g, 86%): mp 172-173° C.; NMR (CDCl3); δ 8.18 (ddd, J=8, 1, 1 Hz, 1H), 7.81 (ddd, J=1, 1, 8 Hz, 1H), 7.62-7.55 (m, 3H), 7.50-7.48 (m, 2H), 7.44-7.34 (m, 2H), 7.06 (ddd, J=8, 7, 1 Hz, 1H), 6.64 (ddd, J=8, 1, 1 Hz), 3.32 (s, 3H), 2.99 (s, 3H); MS: EI [m/z] 418 (100%); Anal. Calcd. for C24H18O3S2: C, 68.87, H, 4.34, N, 0.00. Found: C, 68.60, H, 4.26, N, 0.02.

Workup

  1. extractionextracted with ether
  2. additionSilica gel (40 mL) was added
  3. customthe solvent removed
  4. customchromatographed (85:15 Petroleum ether:ethyl acetate)

Sources & evidence

ORD record
ord-20b6fbf1d8b8457cb9c79c2e05a08c59
Source dataset
uspto-grants-2000_08
Patent number
US06110962

Reaction notes

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