ROMP-generated oligomeric sulfonyl chlorides as versatile soluble scavenging agents |
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Authors: | Moore Joel D Herpel Russell H Lichtsinn Joy R Flynn Daniel L Hanson Paul R |
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Institution: | Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, USA. |
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Abstract: | reaction: see text] A new method for homogeneous nucleophilic scavenging employing oligomeric sulfonyl chloride (OSC) reagents is described. The method utilizes OSC to rapidly scavenge a variety of amines that are present in excess. The OSC reagents are generated from ROM polymerization of 2-chlorosulfonyl-5-norbornene utilizing the second generation Grubbs catalyst to produce oligomers of varying size as stable, free-flowing powders. Following the scavenging event, these oligomers are precipitated with ethyl acetate leaving products in excellent yield and purity. |
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