Water → N-(5'-Bromospiro[cyclobutane-1,2'-indene]-3'(1'H)-ylidene)-2-methylpropane-2-sulfinamide

HRID 1770974

Reaktionsgleichung

Reaktionsgleichung von HRID 1770974
[Br:1][C:2]1[CH:10]=[C:9]2[C:5]([CH2:6][C:7]3([CH2:14][CH2:13][CH2:12]3)[C:8]2=O)=[CH:4][CH:3]=1.[CH3:15][C:16]([S:19]([NH2:21])=[O:20])([CH3:18])[CH3:17].O>CN1C2C(N=C(N)NC=2NCC1CNC1C=CC(C(NC(C(O)=O)CCC(O)=O)=O)=CC=1)=O.CCOC(C)=O.[O-]CC.[Ti+4].[O-]CC.[O-]CC.[O-]CC>[Br:1][C:2]1[CH:10]=[C:9]2[C:5](=[CH:4][CH:3]=1)[CH2:6][C:7]1([CH2:14][CH2:13][CH2:12]1)[C:8]2=[N:21][S:19]([C:16]([CH3:18])([CH3:17])[CH3:15])=[O:20]

Komponenten

7

Edukt 3

HCID 962WaterHCID 3382465Tert-ButanesulfinamideHCID 679796166'-Bromospiro[cyclobutane-1,2'-inden]-1'(3'H)-one2×

Produkt 1

HCID 67979440N-(5'-Bromospiro[cyclobutane-1,2'-indene]-3'(1'H)-ylidene)-2-methylpropane-2-sulfinamideAusbeute 135,3 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 76524Titanium tetraethoxideKatalysatorHCID 8857Ethyl AcetateLösungsmittelHCID 178479889HCID 178479889, VerbindungLösungsmittel

Versuchsvorschrift

6′-Bromospiro[cyclobutane-1,2′-inden]-1′(3′H)-one (Intermediate 38, 1.1 g, 4.38 mmol), 2-methylpropane-2-sulfinamide (0.96 g, 7.88 mmol), and titanium ethoxide (1.805 mL, 8.76 mmol) were dissolved in methyl THF (20 mL), and heated to reflux overnight. The reaction was allowed to cool to r.t., then it was diluted with EtOAc (150 mL). Water (22 mL) was added dropwise over 10 min under vigorous stirring and then the mixture was left standing without stirring for 1.5 h. The solids were filtered off and the organics were evaporated to give a crude product which was purified by flash chromatography (eluent: heptane/ethylacetate 8:1) to afford the title compound (2.1 g, 77% yield), used as such in the next step: MS (ES+) m/z 354 [M+H]+.

Aufarbeitung

  1. temperatureheated
  2. temperatureto reflux overnight
  3. waitthe mixture was left
  4. stirringwithout stirring for 1.5 h
  5. filtrationThe solids were filtered off
  6. customthe organics were evaporated
  7. customto give a crude product which
  8. customwas purified by flash chromatography (eluent: heptane/ethylacetate 8:1)

Quellen und Nachweise

ORD-Eintrag
ord-946b4d24b76842dcb3297b92e0afdeaf
Quelldatensatz
uspto-grants-2016_02
Patentnummer
US09248129B2

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