TY  - THES
A1  - Hauke, Sylvia
T1  - De novo Synthese von L-6-Desoxyzuckern via Ruthenium-Katalysierter Olefinmetathese
Y1  - 2013
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Schmidt, Bernd
A1  - Hauke, Sylvia
T1  - Cross metathesis of allyl alcohols how to suppress and how to promote double bond isomerization
JF  - Organic & biomolecular chemistry : an international journal of synthetic, physical and biomolecular organic chemistry
N2  - Under standard conditions the cross metathesis of allyl alcohols and methyl acrylate is accompanied by the formation of ketones, resulting from uncontrolled and undesired double bond isomerization. By conducting the CM in the presence of phenol, the catalyst loading and the reaction time required for quantiative conversion can be reduced, and isomerization can be suppressed. On the other hand, consecutive isomerization can be deliberately promoted by evaporating excess methyl acrylate after completing cross metathesis and by adding a base or silane as chemical triggers.
Y1  - 2013
U6  - https://doi.org/10.1039/c3ob40167g
SN  - 1477-0520
VL  - 11
IS  - 25
SP  - 4194
EP  - 4206
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - GEN
A1  - Schmidt, Bernd
A1  - Hauke, Sylvia
T1  - Cross metathesis of allyl alcohols
BT  - how to suppress and how to promote double bond isomerization
N2  - Under standard conditions the cross metathesis of allyl alcohols and methyl acrylate is accompanied by the formation of ketones, resulting from uncontrolled and undesired double bond isomerization. By conducting the CM in the presence of phenol, the catalyst loading and the reaction time required for quantiative conversion can be reduced, and isomerization can be suppressed. On the other hand, consecutive isomerization can be deliberately promoted by evaporating excess methyl acrylate after completing cross metathesis and by adding a base or silane as chemical triggers.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 241 
KW  - ring-closing metathesis
KW  - de-novo synthesis
KW  - catalyzed redox isomerization
KW  - carbohydrate-based oxepines
KW  - diels-alder reaction
KW  - olefin-metathesis
KW  - in-situ
KW  - ruthenium carbene
KW  - alkynol cycloisomerization
KW  - carbonyl-compounds
Y1  - 2013
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-95037
SP  - 4194
EP  - 4206
ER  - 
TY  - JOUR
A1  - Schmidt, Bernd
A1  - Krehl, Stefan
A1  - Hauke, Sylvia
T1  - Assisted tandem catalytic cross metathesis-oxidation in one flask from styrenes to 1,2-Diketones and further to quinoxalines
JF  - The journal of organic chemistry
N2  - 1,2-Diketones were synthesized from styrenes by combining a cross metathesis and a Ru-catalyzed alkene oxidation to an assisted tandem catalytic sequence. The synthesis relies on the use of just one metathesis precatalyst, which was in situ converted to the oxidation catalyst by addition of an alkyl hydroperoxide as a chemical trigger and oxidant. The one-flask sequence can be extended beyond 1,2-diketones to quinoxalines, by condensation of the oxidation products with ortho-phenylenediamine.
Y1  - 2013
U6  - https://doi.org/10.1021/jo4005684
SN  - 0022-3263
VL  - 78
IS  - 11
SP  - 5427
EP  - 5435
PB  - American Chemical Society
CY  - Washington
ER  -