ChemInform Abstract: A Tandem Conjugate Addition—Intramolecular Horner—Wadsworth—Emmons Olefination Approach to the Synthesis of Cyclopentene[c]chroman‐2‐ones and Cyclopent‐1‐enecarboxylates.

Abstract

A Tandem Conjugate Addition-Intramolecular Horner-Wadsworth--Emmons Olefination Approach to the Synthesis of Cyclopentene[c]chroman--2-ones andCyclopent-1-enecarboxylates. -(DEREDAS, D.; HUBEN, K.; MANIUKIEWICZ, W.; KRAWCZYK*, H.; Synlett 25 (2014) 2, 280-282, http://dx.doi.org/10.1055/s-0033-1340347 ; Inst. Org. Chem., Tech. Univ., PL-90-924 Lodz, Pol.; Eng.) -F. Berndt 28-138

Synthesis and Chemical Properties of 3-Phosphono-coumarins and 1,2-Benzoxaphosphorins as Precursors for Bioactive Compounds

“…In tandem Michael-intermolecular Horner-Wadsworth-Emmons reactions involving 3-diethylphosphonocoumarin 1a and its substituted analogues 1c and 1h (Scheme 36), an alternative CH-acidic compound, 2,5-hexanedione, was applied [61]. The performed reactions were catalyzed by a stoichiometric amount of TBD at room temperature.…”