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(opens in new window) Buy Article (opens in new window) Permissions and Reprints (opens in new window) All articles of this category (opens in new window) The sequential addition/elimination/cycloammination of 4-pentynones in the presence of benzylamine or ammonia produces 1,2,3,-5-substituted and 2,3,5-substituted pyrroles and fused pyrrole systems, respectively in good to high yields. The methodology has been extended to the preparation of the 17β-hydroxyandrost-4-ene[3,2-b](1-benzyl-5-methyl)pyrrole. 4-pentynones - imines - annulation - pyrroles
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Arcadi et al. (1997) studied this question.
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