Sulfenate Substitution as a Complement and Alternative to Sulfoxidation in the Diastereoselective Preparation of Chiral β-Substituted β-Amino Sulfoxides
作者:Stefan C. Söderman、Adrian L. Schwan
DOI:10.1021/jo302769b
日期:2013.2.15
absolute configuration of the products makes the sulfenate protocol complementary to other existing preparations, including the commonly employed sulfoxidation of β-amino sulfides. The reactivity of N-Boc-protected 2-benzyl-2-aminoethyl iodide was found to be superior to the less stericallyencumbered n-butyl iodide. A transition state model is proposed to account for the stereochemistry of the products
The Preparation of (<i>E</i>)-1-Alkenylthiosilanes by the Reduction and Silicon Capture of 1-Alkenesulfenate Anions
作者:Adrian L. Schwan、Mitchell D. Refvik
DOI:10.1055/s-1998-1572
日期:1998.1
A collection of (E)-1-alkenesulfenate anions were reduced by LiAlH4 at low temperature. The resulting enethiolates, with their E geometry intact, could be captured with chlorosilane to afford silicon protected enethiol ethers of thioaldehydes and thioketones. Reduction at a higher temperature prompts isomerization of the double bond.