Elsevier, Tetrahedron Letters, 47(39), p. 8659-8662
DOI: 10.1016/s0040-4039(98)01979-0
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A high syn stereoselectivity, of the addition of an aromatic to the cyclic N-acyliminium ions generated from hydroxylactams 3a,b,e,f leading to the thieno[2,4]diazepines 4a,b,e,f is described. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.