36803-48-2Relevant academic research and scientific papers
Stereoselective preparation of spirane bridged, sandwiched bisarenes
Rolandsgard, Marit,Baldawi, Saad,Sirbu, Doina,Bj?rnstad, Vidar,R?mming, Christian,Undheim, Kjell
, p. 4129 - 4140 (2007/10/03)
Preparation of α-oxo derivatives of spiro[4.4]nonane, spiro[4.5]decane and spiro[5.5]undecane derivatives is described. An efficient method for spiroannulation by Rh(I)-catalysed intramolecular hydroacylation provides α,α′-difunctionalised spiro[4.5]decan
Mild and chemoselective catalytic deprotection of ketals and acetals using cerium(IV) ammonium nitrate
Ates, Ali,Gautier, Arnaud,Leroy, Bernard,Plancher, Jean-Marc,Quesnel, Yannick,Vanherck, Jean-Christophe,Markó, István E.
, p. 8989 - 8999 (2007/10/03)
Cerium(IV) ammonium nitrate (CAN) is a powerful, though mild, reagent for the efficient and selective removal of a range of ketals and acetals. This novel deprotection method requires only catalytic amounts of CAN and tolerates a variety of functional and protecting groups. Mechanistic insights suggest that the Ce(IV) salts act as unique Lewis acids and not as redox active species.
LEWIS ACID CATALYZED REARRANGEMENTS OF STUCTURALLY RELATED α,β-UNSATURATED EPOXY KETONES AND OXIMES. A COMPLEMENTARY APPROACH TO THE SYNTHESIS OF ISOMERIC 1,4-DIKETOSPIRO ALKANES.
Bach, Robert D.,Tubergen, Mark W.,Klix, Russel C.
, p. 3565 - 3568 (2007/10/02)
Lewis acid catalyzed rearrangement of α,β-epoxy oximes proceeds by oxirane cleavage α to the oxime moiety with an attendant pinacol type alkyl migration to the resonance stabilized carbenium ion at Cα affording a 1,3-diketo-monoxime.
