Abstract
α-Amino acid aminyl radicals have been generated from sulfenamide precursors using Bu3SnH. The aminyl radicals undergo 5-exo-trig cyclisation reactions onto suitably placed N-alkenyl or α-alkenyl chains on the amino acids with reasonable diastereoselectivity. The α-ester of the amino acid imparts electrophilic behaviour to the aminyl radicals and facilitates cyclisation onto alkenes. © 1997 Elsevier Science Ltd.
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