no hydroacylations exist that make use of aldehydes without a chelating group, especially when combined with terminal alkynes. Here we report a synergistic nickel–photocatalytic system that allows for the highly regio- and stereoselective hydroacylation of unactivated aldehydes and alkynes in milder conditions without the use of chelating groups.
Dimmock, J.R.; Smith, L.M.; Smith, P.J., Canadian Journal of Chemistry, 1980, vol. 58, p. 984 - 991
作者:Dimmock, J.R.、Smith, L.M.、Smith, P.J.
DOI:——
日期:——
DIMMROCK J. R.; PATIL S. A.; SARDESSAI M. S.; MAZUREK M., PHARMAZIE, 42,(1987) N 2, 111-113
作者:DIMMROCK J. R.、 PATIL S. A.、 SARDESSAI M. S.、 MAZUREK M.
DOI:——
日期:——
Kosmetische und dermatologische Lichtschutzformulierungen mit einem Gehalt an unsymmetrisch substituierten Triazinderivaten und oberflächenaktiven Zitronensäureestern
申请人:Beiersdorf AG
公开号:EP1216690B1
公开(公告)日:2012-07-25
Heteropoly Compound Catalyzed Synthesis of Both Z- and E-α,β-Unsaturated Carbonyl Compounds
An EZ switch: The cationic species of the heteropoly compounds has a critical impact on the Z/E selectivity of the Meyer–Schuster rearrangement of propargyl alcohols (see scheme). The isolation of the thermodynamically unfavorable Z‐α,β‐unsaturatedcarbonylcompounds is notable. The high Z selectivities were obtained at a reaction temperature as high as 50 °C.
一个 EZ 开关:杂多化合物的阳离子物质对一个临界冲击ž / é炔丙基醇的迈耶-舒斯特重排反应的选择性(见方案)。分离出热力学上不利的Z -α,β-不饱和羰基化合物。在高达 50°C的反应温度下可获得较高的Z选择性。