科研之友
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摘要
Tetrahydro-3a,8b-dihydroxy-oxoindeno[1,2-b]pyrroles, prepared from ninhydrin and enamines, are subjected to intramolecular Wittig reactions to afford dihydro-1H-furo[2%26apos;,3%26apos;: 2,3] cyclopenta[ 1,2-b] pyrroles. These fused 5,5-ring systems undergo Et3N-mediated fragmentation to afford tetrahydrobenzo[c] furo[3,2-e]azocines in good yields.
- 出版日期2012-5
