反応 #4961

反応方程式

azetidine

azetidine

7-chloro-2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f]-1,4-oxazepine-5(4H)-thione

potassium carbonate

azetidine

dimethyl sulfoxide

→

yellow crystals

収率 82.0%

2-(1-Azetidinyl]ethyl-7-chloro-2,3-dihydro-4-methylpyrido[3,2-f][1,4]-oxazepine-5(4H)-thione oxalate

収率 82.0%

溶媒

water

反応条件

後処理

1. 1
   その他The flask was sealed
2. 2
   workup.ADDITIONwas added
3. 3
   その他continued at room temperature
4. 4
   workup.WAITAfter 48 hr
5. 5
   その他the entire reaction mixture
6. 6
   抽出extracted with 2×100 ml of benzene
7. 7
   洗浄washed with 3×100 ml of water and 1×100 ml saturated sodium chloride
8. 8
   乾燥dried over sodium sulfate
9. 9
   ろ過filtered
10. 10
    濃縮concentrated by rotary evaporation (65° C., 30 mm Hg)
11. 11
    workup.ADDITIONThe residue was treated with oxalic acid in isopropyl alcohol

実験手順

To a solution of 4.75 g (0.0164 mole) of 7-chloro-2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f]-1,4-oxazepine-5(4H)-thione in 40 ml of dimethyl sulfoxide was added 8.0 g of crushed potassium carbonate and 1.4 g (0.0246 mole) of azetidine. The flask was sealed and stirred at room temperature for 24 hr after which an additional 0.6 g (0.011 mole) of azetidine was added. After 24 hr, another 0.5 (0.009 mole) of azetidine was added and stirring continued at room temperature. After 48 hr, the entire reaction mixture was diluted with 200 ml of water and extracted with 2×100 ml of benzene. The organic extracts were combined, washed with 3×100 ml of water and 1×100 ml saturated sodium chloride, dried over sodium sulfate, filtered, and concentrated by rotary evaporation (65° C., 30 mm Hg). The residue was treated with oxalic acid in isopropyl alcohol to give 5.4 g (82%) of yellow crystals, m.p. 146°-150° C.

出典