Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Synthesis of 2- and 3-substituted furans and γ-hydroxybutenolides (A) and 5-substituted butenolides and bisbutenolides (B). LDA, lithium diisopropylamide; THF, tetrahydrofuran; IBX, 1-hydroxy-1,2-benziodoxol-3(1H)-one 1-oxide; r.t., room temperature.
