153361-01-4Relevant articles and documents
Palladium- and copper-catalyzed 1,4-additions of organozinc compounds to conjugated aldehydes
Marshall, James A.,Herold, Martin,Eidam, Hilary S.,Eidam, Patrick
, p. 5505 - 5508 (2007/10/03)
Conjugated aldehydes undergo smooth Pd(OAc)2·PPh 3- or Me2CuCNLi2-catalyzed 1,4-addition of dialkylzinc reagents.
Studies Directed toward the Total Synthesis of Azaspiracid: Stereoselective Construction of C1-C12, C13-C19, and C21-C25 Fragments
Carter, Rich G.,Weldon, David J.
, p. 3913 - 3916 (2007/10/03)
equation presented The efficient entry to the C1-C12, C13-C19, and C21-C25 fragments of azaspiracid is outlined. The C1-C12 portion is constructed using a key asymmetric allenyl borane addition to the corresponding α,β-unsaturated aldehyde. The synthesis of the C13-C19 portion utilizes an Evans asymmetric alkylation followed by Sharpless asymmetric dihydroxylation. In addition, a novel solution to the mismatched effects of a neighboring chiral oxazolidinone during a Sharpless dihydroxylation is detailed.
Radical-Induced Fragmentations of Ketoepoxides
Breen, Anthony P.,Murphy, John A.,Patterson, Christopher W.,Wooster, Nicholas F.
, p. 10643 - 10654 (2007/10/02)
The cleavage of α-ketoepoxycarbinyl radicals has been investigated for six substrates using two methods of radical formation.Products resulting from carbon-oxygen bond cleavage were observed in each case, but vinyl ethers derived from epoxide carbon-carbon cleavage were isolated in one case.