Carbamate-directed hydroboration (using BH3) of 1-substituted 3-cyclop
entenes 2, 6 and 9 and an enantioselective synthesis of the excitatory
amino acid 1-aminocyclopentane-1,3-dicarboxylic acid via carbamate-di
rected asymmetric hydroboration [90% de, 45% ee using (+)-IpcBH(2)] of
cyclopentene 2 are described. (C) 1998 Elsevier Science Ltd. All righ
ts reserved.