반응 #55718

반응 방정식

n-butyllithium

diisopropylamine

hydrogen

4-chlorobenzyl bromide

→

title compound

2-(4-chlorobenzyl)perhydroazepine

용매

acetic acid

n-hexane

tetrahydrofuran

dichloromethane

methanol

diethyl ether

반응 조건

후처리

1. 1
   온도cool it down again to -78°
2. 2
   workup.STIRRINGstir for 1 hour
3. 3
   workup.STIRRINGAfter stirring for another 5 hours at -78°
4. 4
   온도Warm the mixture up to room temperature
5. 5
   workup.STIRRINGwhile stirring vigorously
6. 6
   여과Filter off the catalyst
7. 7
   세척wash the catalyst with methanol
8. 8
   농축Concentrate the methanolic filtrate
9. 9
   workup.ADDITIONTreat the oily residue with ethanol-ethereal hydrochloric acid

실험 절차

Add a solution of 10 mmol of n-butyllithium in n-hexane to a solution of 1.01 g of diisopropylamine in 100 ml of tetrahydrofuran at 78° and pass argon through it. Stir the mixture for 5 minutes at room temperature and then cool it down again to -78°. Add a solution of 1.28 g of n-nitrosoperhydroazepine and stir for 1 hour. Then add 4.1 g of 4-chlorobenzyl bromide in a small amount of diethyl ether. After stirring for another 5 hours at -78° add 5 ml of glacial acetic acid. Warm the mixture up to room temperature and pour it into 100 ml of dichloromethane-saturated sodium chloride solution. Free the organic phase from the solvent and then solve it in methanol. After addition of 2 g of freshly prepared Laney nickel, pass hydrogen through the solution while stirring vigorously. Filter off the catalyst, and wash the catalyst with methanol. Concentrate the methanolic filtrate. Treat the oily residue with ethanol-ethereal hydrochloric acid to obtain the hydrochloride of the title compound: m.p. 176° to 178°.

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