33383-52-7Relevant articles and documents
Cyclotrimerization for the Synthesis of Cyclopropanes
Manna, Srimanta,Antonchick, Andrey P.
supporting information, p. 5290 - 5293 (2016/04/26)
The synthesis of small rings by functionalization of C(sp3)-H bonds remains a great challenge. We report for the first time a copper-catalyzed [1+1+1] cyclotrimerization of acetophenone derivatives under mild reaction conditions. The reaction has a broad scope for the stereoselective synthesis of cyclopropanes by trimerization of acetophenone. The developed transformation is based on an extraordinary copper-catalyzed cascade process that allows saturated carbocycles to be obtained for the first time by cyclotrimerization through functionalization of C(sp3)-H bonds. The cascade of sixfold C(sp3)-H bond functionalization allows the synthesis of cyclopropanes in a highly stereoselective approach. Give it a tri: Copper-catalyzed oxidative [1+1+1] cyclotrimerization of acetophenone derivatives under mild reaction conditions and with a broad reaction scope has been developed. This transformation is a radical cascade process that allows saturated carbocycles to be obtained by cyclotrimerization through functionalization of C(sp3)-H bonds.
Generation of the Selenonium Ylide by the Carbenic Reaction. Formation of Cyclopropane Derivatives via Selenonium Ylide
Ibata, Toshikazu,Kashiuchi, Makoto
, p. 929 - 930 (2007/10/02)
The Cu(acac)2-catalyzed decomposition of α-diazoacetophenones in the presence of bis(p-methoxy-phenyl) selenide (3) did not give the corresponding selenonium ylide but gave r-l,c-2,t-3-tribenzoylcylopropanes through the successive reaction of the intermed
