Asymmetric Claisen Rearrangements on Chiral Vinyl Sulfoxides
作者:Roberto Fernández de la Pradilla、Carlos Montero、Mariola Tortosa、Alma Viso
DOI:10.1002/chem.200801680
日期:2009.1.5
Highly diastereoselective Claisen rearrangements of acyclic allyl vinyl ethers bearing a chiralsulfoxide at C‐5 provide γ‐δ‐unsaturated aldehydes or ketones with up to two consecutive asymmetric centers in the molecule whilst preserving a useful vinyl sulfoxide. The reactivity of related vinyl sulfides and sulfones has also been examined in this work.
Sulfinyl-Mediated Chirality Transfer in Diastereoselective Claisen Rearrangements
作者:Roberto Fernández de la Pradilla、Carlos Montero、Mariola Tortosa
DOI:10.1021/ol0261130
日期:2002.7.1
[reaction: see text] The highly selective Claisenrearrangements of substrates bearing a sulfinyl moiety at C-5 allow for creation of up to two asymmetric centers and preserve a useful vinyl sulfoxide.
Asymmetric carbon-carbon bond formation via sulfoxide-directed SN2' displacements of acyclic allylic mesylates
作者:J. P. Marino、A. Viso、Roberto Fernandez de la Pradilla、P. Fernandez
DOI:10.1021/jo00004a002
日期:1991.2
The addition of organocyanocuprates to acylic allylic mesylates bearing a chiral sulfoxide in the 2-position occurs with complete S(N)2' regioselectivity, high E/Z stereoselectivity (15:1) and high asymmetric induction to produce enantiometrically pure trisubstituted vinyl sulfoxides.