ARKIVOC: Online Journal of Organic Chemistry, ( ISI ), Volume (2008), No (15), Year (2008-1) , Pages (343-349)
Title : ( Triphenylphosphine promoted addition of acetylenic esters to benzofuran-2,3-dione: one-pot synthesis of Novel γ-Spirolactones )
Authors: Abbas Ali Esmaeili , Mohammad Ali Nasseri , Hamid Vesalipoor , Hamid Reza Bijanzadeh ,
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Abstract
The reaction of the zwitterionic intermediates generated from dialkyl acetylene dicarboxylates and triphenylphosphine with benzofuran-2,3-diones provides a one-pot route to new highly functionalized γ-spirolactones in good yield.
