Fast Ruthenium-Catalysed Allylation of Thiols by Using Allyl Alcohols as Substrates
作者:Alexey B. Zaitsev、Helen F. Caldwell、Paul S. Pregosin、Luis F. Veiros
DOI:10.1002/chem.200900192
日期:2009.6.22
Green and fast: Allylation of aromatic and aliphatic thiols, by usingallylalcohols as substrates, requires only minutes at ambient temperature with a Ru catalyst (see scheme). Quantitative conversion is normal and the catalyst possesses high functional‐group tolerance.
Enabling iron catalyzed Doyle–Kirmse rearrangement reactions with in situ generated diazo compounds
作者:Katharina J. Hock、Lucas Mertens、Renè Hommelsheim、Robin Spitzner、Rene M. Koenigs
DOI:10.1039/c7cc02801f
日期:——
Slow addition of sodium nitrite allows the in situ preparation of highly explosive diazo compounds and enables their safe and scalable application in ironcatalyzed rearrangement reactions of allylic and propargylic sulfides. With catalyst loadings as low as 0.1 mol% an effective entry into α-mercapto-nitriles, α-mercapto-esters and α-trifluoromethyl-sulfides on a gram-scale is achieved.