I. Yavari, S. Seyfi
May 1, 2012
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0
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Journal
ChemInform
Abstract
Tetrahydro-3a,8b-dihydroxy-oxoindeno[1,2- b ]pyrroles, prepared from ninhydrin and enamines, are subjected to intramolecular Wittig reactions to afford dihydro-1 H -furo[2′,3′:2,3]cyclopenta[1,2- b ]pyrroles. These fused 5,5-ring systems undergo Et 3 N-mediated fragmentation to afford tetrahydrobenzo[ c ]furo[3,2- e ]-azocines in good yields.