38865-40-6Relevant articles and documents
Graphene Oxide Promotes Site-Selective Allylic Alkylation of Thiophenes with Alcohols
Favaretto, Laura,An, Juzeng,Sambo, Marco,De Nisi, Assunta,Bettini, Cristian,Melucci, Manuela,Kovtun, Alessandro,Liscio, Andrea,Palermo, Vincenzo,Bottoni, Andrea,Zerbetto, Francesco,Calvaresi, Matteo,Bandini, Marco
supporting information, p. 3705 - 3709 (2018/06/26)
The graphene oxide (GO) assisted allylic alkylation of thiophenes with alcohols is presented. Mild reaction conditions and a low GO loading enabled the isolation of a range of densely functionalized thienyl and bithienyl compounds in moderate to high yields (up to 90%). The cooperative action of the Br?nsted acidity, epoxide moieties, and π-surface of the 2D-promoter is highlighted as crucial in the reaction course of the present Friedel-Crafts-type protocol.
2H-chromenes generated by an iron(III) complex-catalyzed allylic cyclization
Calmus,Corbu,Cossy
supporting information, p. 1381 - 1386 (2015/05/19)
A straightforward method based on an iron(III) complex-catalyzed cyclization of 2-(1-hydroxyallyl)phenols is reported to access a large variety of 2H-chromenes. This method was applied to the total synthesis of a natural product, tephrowatsin B.
Oxygen as single oxidant for two steps: Base-free one-pot Pd(ii)-catalyzed alcohol oxidation & arylation to halogen-intact β-aryl α,β-enones
Vellakkaran, Mari,Andappan, Murugaiah M. S.,Nagaiah, Kommu
, p. 45490 - 45494 (2014/12/10)
Using oxygen as the sole oxidant for two steps, we developed a new method to synthesize β-aryl α,β-enones by fine-tuning the Pd(ii)-catalyzed oxidation of allyl alcohol to subsequent arylation with arylboronic acids, arylboronic ester and aryltrifluoroborate salt. This one-pot green method does not require copper salt, base, and intermediate isolation. Halogen-bearing chalcones, dibenzylideneacetones and arylalkyl enones were synthesized in good yields. This journal is