CL : Vol. 30 (2001) , No. 6 p.592

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Chemistry Letters

Vol. 30 (2001) , No. 6 p.592

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Direct Preparation of Rotaxane from Aminoalcohol: Selective O-Acylation of Aminoalcohol in the Presence of Trifluoromethanesulfonic Acid and Crown Ether

Nobuhiro Kihara¹⁾, Jong-Il Shin¹⁾, Yasuko Ohga¹⁾ and Toshikazu Takata¹⁾

1) Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University

(Received April 2, 2001)

Selective O-acylation of aminoalcohols by a bulky acid anhydride in the presence of trifluoromethanesulfonic acid and dibenzo-24-crown-8 afforded [2]rotaxane in high yields. An acid halide could be used as an acylating reagent in the presence of silver trifluoromethanesulfonate.

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	doi:10.1246/cl.2001.592
	JOI JST.JSTAGE/cl/2001.592

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