Reaktion #53502

Reaktionsgleichung

EDCI

N-Boc-glycine

1-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazine

→

(2-{4-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazin-1-yl}-2-oxoethyl)carbamic acid tert-butyl ester

Ausbeute 102.2%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeclose to 20° C.
2. 2
   Filtrationthe reaction mixture is filtered on sintered glass
3. 3
   WaschenThe resin is rinsed with three times 5 cm3 of dichloromethane
4. 4
   WaschenThe combined filtrates are washed with 20 cm3 of water
5. 5
   Trocknendried over magnesium sulfate
6. 6
   Filtrationfiltered on sintered glass
7. 7
   Einengenconcentrated to dryness under reduced pressure (1 kPa) at a temperature
8. 8
   Sonstigeclose to 40° C

Vorschrift

1.02 g of supported EDCI (5 mM), 44 mg of N-Boc-glycine and then 10 cm3 of dichloromethane are successively added, at a temperature close to 20° C., to 108.5 mg of 1-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazine. After stirring for 20 hours at a temperature close to 20° C., the reaction mixture is filtered on sintered glass. The resin is rinsed with three times 5 cm3 of dichloromethane. The combined filtrates are washed with 20 cm3 of water, dried over magnesium sulfate, filtered on sintered glass and concentrated to dryness under reduced pressure (1 kPa) at a temperature close to 40° C. 143 mg of (2-{4-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazin-1-yl}-2-oxoethyl)carbamic acid tert-butyl ester are thus obtained in the form of a cream-colored lacquer [1H NMR spectrum (400 MHz, (CD3)2SO-d6, δ in ppm): 1.40 (s, 9H), 2.93 (s, 3H), from 3.05 to 3.20 (mt, 4H), 3.57 (mt, 4H), 3.80 (mt, 2H), 3.84 (d, J=6 Hz, 2H), 4.19 (mt, 2H), 4.78 (s, 1H), 6.79 (t, J=6 Hz, 1H), 6.82 (d, J=8 Hz, 1H), 6.93 (broad s, 1H), 6.99 (dd, J=8 and 2.5 Hz, 1H), 7.27 (t, J=8 Hz, 1H), 7.36 (d, J=8 Hz, 4H), 7.46 (d, J=8 Hz, 4H)].

Quelle