تفاعل #572575

معادلة التفاعل

lithium aluminium hydride

4-[3-(1-piperidinylmethyl)phenoxy]butanoic acid

thionyl chloride

5-amino-1,3-dimethyl-1,2,4-triazole

→

title compound

المردود 33.1%

1,3-dimethyl-N-[4-[3-(1-piperidinylmethyl)phenoxy]butyl]-1H-1,2,4-triazole-5-amine

المردود 33.1%

المذيبات

methylene chloride

methylene chloride

tetrahydrofuran

ظروف التفاعل

المعالجة

1. 1
   أخرىevaporated in vacuo
2. 2
   أخرىto give a pale yellow solid which
3. 3
   workup.STIRRINGThe reaction mixture was stirred at room temperature for 24 h
4. 4
   أخرىevaporated in vacuo
5. 5
   workup.DISSOLUTIONThe residue was dissolved in aqueous sodium bicarbonate solution
6. 6
   استخلاصextracted with ethyl acetate
7. 7
   أخرىThe organic extracts were dried
8. 8
   أخرىevaporated
9. 9
   أخرىto give a brown oil which
10. 10
    workup.STIRRINGstirred at room temperature for 18 h
11. 11
    درجة الحرارةrefluxed for 3 h
12. 12
    أخرىThe cooled reaction mixture
13. 13
    أخرىwas quenched with water (300 ml)
14. 14
    استخلاصextracted with ethyl acetate
15. 15
    غسيلThe combined extracts were washed with brine
16. 16
    أخرىdried
17. 17
    أخرىevaporated in vacuo
18. 18
    أخرىto give an oil which
19. 19
    workup.DISTILLATIONwas distilled

الإجراء التجريبي

A stirred suspension of 4-[3-(1-piperidinylmethyl)phenoxy]butanoic acid (4.0 g) in methylene chloride (100 ml) and dimethylformamide (24 drops) was treated with thionyl chloride (5.16 g). The solution was stirred at room temperature for 18 h and evaporated in vacuo, to give a pale yellow solid which was dissolved in methylene chloride (100 ml) and treated with 5-amino-1,3-dimethyl-1,2,4-triazole (1.61 g). The reaction mixture was stirred at room temperature for 24 h and evaporated in vacuo. The residue was dissolved in aqueous sodium bicarbonate solution and extracted with ethyl acetate. The organic extracts were dried and evaporated to give a brown oil which was dissolved in tetrahydrofuran (500 ml), treated with lithium aluminium hydride (3.04 g), stirred at room temperature for 18 h and refluxed for 3 h. The cooled reaction mixture was quenched with water (300 ml) and extracted with ethyl acetate. The combined extracts were washed with brine, dried and evaporated in vacuo to give an oil which was distilled to give the title compound (1.7 g) as a pale yellow oil, b.p. 230°/0.06 mm.

المصدر