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Synlett 1994; 1994(11): 905-908
DOI: 10.1055/s-1994-23043
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Reactivity of 1-Aza-1,4,5,6-tetrahydroazulenes and their Utility in the Preparation of Dipyrrolic Intermediates Needed for Petroporphyrin Synthesis

Timothy D. Lash* , Thanh H. Nguyen, Zao Hu
  • *Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, USA
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Publication Date:
22 March 2002 (online)

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1-Aza-1,4,5,6-tetrahydroazulene 9a condensed with 3-pyrrolecarbinols under acidic conditions to give the 7-pyrrolylmethyl derivatives 21a-c; these novel dipyrroles are of value in the synthesis of geoporphyrins.