反应 #53501

反应方程式

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

→

2-amino-1-{4-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazin-1-yl}ethanone

收率 78.3%

溶剂

formic acid

反应条件

后处理

1. 1
   其他close to 45° C
2. 2
   浓缩The reaction medium is concentrated to dryness under reduced pressure (5 kPa) at a temperature
3. 3
   其他close to 30° C.
4. 4
   其他After separating
5. 5
   洗涤the organic phase is washed with 10 cm3 of water
6. 6
   干燥dried over magnesium sulfate
7. 7
   过滤filtered
8. 8
   浓缩concentrated to dryness under reduced pressure (1 kPa) at a temperature
9. 9
   其他close to 40° C

实验过程

A solution of 76 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 in 2.5 cm3 of formic acid is stirred for 1 hour at a temperature close to 45° C. The reaction medium is concentrated to dryness under reduced pressure (5 kPa) at a temperature close to 30° C., taken up in 10 cm3 of ethyl acetate and alkalinized with 10 cm3 of a saturated aqueous sodium bicarbonate solution. After separating after settling out, the organic phase is washed with 10 cm3 of water, dried over magnesium sulfate, filtered and concentrated to dryness under reduced pressure (1 kPa) at a temperature close to 40° C. 51 mg of 2-amino-1-{4-[3-({1-[bis-(4-chlorophenyl)methyl]azetidin-3-ylidene}methanesulfonylmethyl)phenyl]piperazin-1-yl}ethanone are thus obtained in the form of a beige lacquer [1H NMR spectrum (300 MHz, CDCl3, δ in ppm): from 1.95 to 2.25 (broad unresolved complex, 2H), 2.77 (s, 3H), from 3.10 to 3.30 (mt, 4H), from 3.50 to 3.60 (mt, 2H), 3.56 (broad s, 2H), from 3.75 to 3.90 (mt, 4H), 4.34 (mt, 2H), 4.50 (s, 1H), 6.84 (broad d, J=8 Hz, 1H), 6.91 (dd, J=8 and 2 Hz, 1H), 7.01 (mt, 1H), from 7.20 to 7.40 (mt, 9H)].

来源