Triphenylphosphine → (E)-6-chloro-9-[4-(diisopropoxyphosphoryl)but-3-enyl]purine

HRID 1708092

Reaktionsgleichung

Reaktionsgleichung von HRID 1708092
[Cl:1][C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[NH:4][CH:5]=[N:6]2.O[CH2:12][CH2:13]/[CH:14]=[CH:15]/[P:16](=[O:25])([O:21][CH:22]([CH3:24])[CH3:23])[O:17][CH:18]([CH3:20])[CH3:19].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1>[Cl:1][C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[CH2:12][CH2:13]/[CH:14]=[CH:15]/[P:16]([O:21][CH:22]([CH3:23])[CH3:24])([O:17][CH:18]([CH3:19])[CH3:20])=[O:25]

Komponenten

6

Edukt 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 53592776-ChloropurineHCID 10399205diisopropyl (E)-4-hydroxybut-1-enylphosphonate

Produkt 1

HCID 10067914(E)-6-chloro-9-[4-(diisopropoxyphosphoryl)but-3-enyl]purineAusbeute 37,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a mixture of 6-chloropurine (414 mg, 2.67 mmol), diisopropyl (E)-4-hydroxybut-1-enylphosphonate (630 mg, 2.67 mmol) and triphenyl phosphine (1.05 g, 4.00 mmol) in dry tetrahydrofuran (30 ml) stirred at 0° C. was added diethyl azodicarboxylate (0.70 g, 4.02 mmol). The mixture was allowed to warm to room temperature and stirred for 27.5 hr. The solvent was removed and the residue Was purified by column chromatography on silica gel eluting with dichloro-methane-methanol (24:1, 13:1) to give (E)-6-chloro-9-[4-(diisopropoxyphosphoryl)but-3-enyl]purine as a white solid (0.37 g, 37%), m.p. 105° C.; λmax (EtOH) 266 (9,260)nm; υmax (KBr) 3435, 2980, 1590, 1560, 1330, 1230 and 1210 cm-1 ; δH (CDCl3) 1.25 (12H, dd, J 6 Hz and 21 Hz, CH(CH3)2), 2.88 (2H, m, CH2), 4.45 (2H, t, J 7 Hz, CH2N), 4.55 (2H, m, CH(CH3)2), 5.68 (1H, dd, J 17 Hz and 20 Hz PCH=CH), 6.70 (1H, ddt, J 7 Hz, 17 Hz and 22 Hz, PCH=CH), 8.10 (1H, s, H-2/H-8), 8.77 (1H, s, H-2/H-8); FABMS (thioglycerol) 373 (MH+) (Found: C, 48.40; H, 6.03; N, 14.81%. C15H22ClN4O3P requires C, 48.33; H, 5.95; N, 15.03%).

Aufarbeitung

  1. temperatureto warm to room temperature
  2. stirringstirred for 27.5 hr
  3. customThe solvent was removed
  4. customthe residue Was purified by column chromatography on silica gel eluting with dichloro-methane-methanol (24:1, 13:1)

Quellen und Nachweise

ORD-Eintrag
ord-2ce9467bafca43759eadb142f202b8f4
Quelldatensatz
uspto-grants-1994_10
Patentnummer
US05356886

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