2,2,6,6-Tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dithiole → Bis-(2,2,6,6-tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dithiole-4-yl)-mono-(2,2,6,6-tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dioxol-4-yl)methanol

HRID 2594Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2594
[CH3:1][C:2]1([CH3:16])[S:6][C:5]2[CH:7]=[C:8]3[S:12][C:11]([CH3:14])([CH3:13])[S:10][C:9]3=[CH:15][C:4]=2[S:3]1.[CH2:17]([Li])[CH2:18][CH2:19][CH3:20].C[O:23][C:24]([C:26]1[C:36]2[O:37][C:38]([CH3:41])([CH3:40])[O:39][C:35]=2[CH:34]=[C:28]2[O:29][C:30]([CH3:33])([CH3:32])[O:31][C:27]=12)=O>C1COCC1>[CH3:13][C:11]1([CH3:14])[S:10][C:9]2[C:15]([C:24]([C:17]3[C:5]4[S:6][C:2]([CH3:16])([CH3:1])[S:3][C:4]=4[CH:20]=[C:19]4[S:12][C:11]([CH3:13])([CH3:14])[S:10][C:18]=34)([C:26]3[C:27]4[O:31][C:30]([CH3:32])([CH3:33])[O:29][C:28]=4[CH:34]=[C:35]4[O:39][C:38]([CH3:40])([CH3:41])[O:37][C:36]=34)[OH:23])=[C:4]3[S:3][C:2]([CH3:16])([CH3:1])[S:6][C:5]3=[CH:7][C:8]=2[S:12]1

Komponenten

5

Edukt 3

HCID 111969402,2,6,6-Tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dithioleHCID 206693184-Methoxycarbonyl-2,2,6,6-tetramethylbenzo[1,2-d:4,5-d']-bis-(1,3)-dioxoleHCID 178418339Butyllithium

Produkt 1

HCID 86752294Bis-(2,2,6,6-tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dithiole-4-yl)-mono-(2,2,6,6-tetramethylbenzo[1,2-d:4,5-d']-bis(1,3)dioxol-4-yl)methanolAusbeute 44 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

2,2,6,6-Tetramethylbenzo[1,2-d:4,5-d']bis(1,3)dithiole (2.86 g, 10 mmol; prepared according to WO-91/12024) was dissolved in anhydrous THF (75 mL) and cooled to -70° C. n-Butyllithium (4.4 mL, 2.5M in hexane) was added. The reaction mixture was allowed to reach ambient temperature. 4-Methoxycarbonyl-2,2,6,6-tetramethylbenzo-[1,2-d:4,5-d')-bis-(1,3)-dioxole (1.4 g, 5 mmol) was added as a solid. After 1 hour, the mixture was quenched with saturated aqueous NaH2PO4. The aqueous phase was discarded and the organic layer evaporated. The residue was dissolved in dichloromethane, washed with water and dried (Na2SO4). The product was purified by column chromatography (dichloromethane:heptane, 1:1) giving 1.8 g (44%) of pure product.

Aufarbeitung

  1. customprepared
  2. additionwas added
  3. customto reach ambient temperature
  4. customthe mixture was quenched with saturated aqueous NaH2PO4
  5. customthe organic layer evaporated
  6. dissolutionThe residue was dissolved in dichloromethane
  7. washwashed with water
  8. dry with materialdried (Na2SO4)
  9. customThe product was purified by column chromatography (dichloromethane:heptane, 1:1)

Quellen und Nachweise

ORD-Eintrag
ord-6735643c3b9e41779184084c922223ce
Quelldatensatz
uspto-grants-1998_03
Patentnummer
US05728370

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