175788-15-5Relevant articles and documents
Direct Synthesis of Enones by Visible-Light-Promoted Oxygenation of Trisubstituted Olefins Using Molecular Oxygen
Harada, Shinji,Matsuda, Daiki,Morikawa, Takahiro,Nishida, Atsushi
supporting information, p. 1372 - 1377 (2020/10/02)
A one-step synthesis of enones from olefins is described. The reaction was performed under visible-light irradiation in the presence of molecular oxygen and a photocatalyst. The reaction proceeded with various types of trisubstituted olefins to give enones in good yields with high regioselectivity. In particular, oxygen- and nitrogen-containing functional groups, heteroaromatic rings, and cyclopropanes were tolerated. Mechanistic studies and previous reports indicated that the active oxygen species generated in the reaction system is singlet oxygen.
Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate
Liu, Renhe,Zhang, Min,Winston-Mcpherson, Gabrielle,Tang, Weiping
supporting information, p. 4376 - 4378 (2013/06/05)
Regioselective ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes was developed. The reaction involves a copper-catalyzed cycloaddition of an alkyne with an arylsulfonyl azide and a silver-catalyzed carbene formation followed by ring expansion of a cyclopropyl carbene intermediate.
The use of 1,2-O-isopropylidene-α-d-xylofuranose as a chiral auxiliary in asymmetric cyclopropanation reactions
Vega-Perez, Jose M.,Perinan, Ignacio,Iglesias-Guerra, Fernando
experimental part, p. 1065 - 1072 (2009/09/30)
The stereoselective synthesis of cyclopropylmethylidene acetals derived from 1,2-O-isopropylidene-d-xylofuranose, as a chiral auxiliary, is described. The Simmons-Smith cyclopropanation reaction of the corresponding alkenylidene derivatives with CH2
