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Hydroboration (using BH3) of 1-substituted 3-cyclopentenes 3, 9 and 17 and
an enantioselective synthesis of the excitatory amino acid 1-aminocyclopent
ane-1,3-dicarboxylic acid via asymmetric hydroboration [90% de, 45% ee usin
g (+)-IpcBH(2)] of cyclopentene 17 are described. (C) 1999 Elsevier Science
Ltd. All rights reserved.