cheminform abstract: an improved cobalt catalyst for homo diels—alder reactions of acyclic...
TRANSCRIPT
2000 cycloaddition reactions
cycloaddition reactionsO 0070
50 - 035An Improved Cobalt Catalyst for Homo Diels–Alder Reactions ofAcyclic 1,3-Dienes with Alkynes. — Homo Diels–Alder reactions ofnorbornadiene (I) and acyclic 1,3-dienes (IV) with the alkynes (II) and (VI)proceed efficiently in the presence of a new cobalt catalyst system. In addition,the polycyclic compounds (IX) and (XI) having a new 1,3-diene substructure areobtained from ethynyl-cyclohexene (VI) by tandem Diels–Alder reactions. —(HILT, GERHARD; DU MESNIL, FRANCOIS-XAVIER; Tetrahedron Lett. 41(2000) 35, 6757-6761; Fachbereich Chem., Ludwig-Maximilians-Univ., D-81377Muenchen, Germany; EN)
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