An improved dominohydroformylation/benzoincondensation to give α‐hydroxy ketones has been developed. Easily available olefins are smoothly converted into the corresponding α‐hydroxy ketones in high yields with excellent regioselectivities. Key to success is the use of a specific catalytic system consisting of a rhodium/phosphine complex and the CO2 adduct of an N‐heterocyclic carbene.
Acyloins are efficiently synthesized in three steps from alkynes via hydrosilylation followed by an addition-type ozoneoxidation and hydrogenation. The key intermediate α-silylperoxy ketone is con...
REDUCTIVE COUPLING OF<i>S</i>-(2-PYRIDYL) ALIPHATIC THIOATES BY USE OF BIS(1,5-CYCLOOCTADIENE)NICKEL
作者:Makoto Onaka、Yoshio Matsuoka、Teruaki Mukaiyama
DOI:10.1246/cl.1980.905
日期:1980.8.5
S-(2-Pyridyl) aliphatic thioates are reductively dimerized to give α-diketones and α-hydroxy ketones on treatment with bis(1,5-cyclooctadiene)nickel at 40°C.