title: Reactivity of cyclic sulfamidates towards sulfur-stabilised enolates. Stereocontrolled synthesis of functionalised lactams.
abstract: A structurally representative series of 1,2- and 1,3-cyclic sulfamidates react with enolates derived from methyl alpha-phenylthioacetate 9b to give 5- and 6-substituted alpha-phenylthio lactams 20-24. These products provide, via the corresponding sulfoxides, an entry to alpha,beta-unsaturated lactams e.g. 12, 27, 29 and their alpha-phenylthio analogues e.g. 26 and 30. With the enantiomerically pure 1,2-cyclic sulfamidates 10, 15 and 17, these reactions all proceed with no detectable loss of stereochemical integrity.
authors: School of Chemistry, University of Bristol, Bristol, UK BS8 1TS.
authors: John F
authors: JF
authors: Bower
authors: Suda
authors: S
authors: Chakthong
authors: Jakub
authors: J
authors: Svenda
authors: Andrew J
authors: AJ
authors: Williams
authors: Ron M
authors: RM
authors: Lawrence
authors: Peter
authors: P
authors: Szeto
authors: Timothy
authors: T
authors: Gallagher