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Tetrahedron ; 63(14): 2959-2965, 2007 Apr 02.
Article in English | MEDLINE | ID: mdl-18382602

ABSTRACT

Fluoride-based deprotection of silylated 2-alkynylbenzyl alcohol derivatives featuring carbonyl-substituted alkynes results in the direct synthesis of alkylidenephthalan vinylogous esters. The reaction is selective for the Z alkylidenephthalans in a thermodynamically controlled process. Similar compounds are also produced in the coupling of Fischer carbene complexes with 2-alkynylbenzoyl derivatives in an aqueous solvent system. Subsequent acid-catalyzed inter- or intramolecular Diels-Alder reactions lead to hydronaphthalene or hydrophenanthrene derivatives.

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