TY  - JOUR
A1  - Schultze, Christiane
A1  - Foß, Stefan
A1  - Schmidt, Bernd
T1  - 8-Prenylflavanones through microwave promoted tandem claisen rearrangement/6-endo-trig cyclization and cross metathesis
JF  - European journal of organic chemistry
N2  - Prenylated flavanones were obtained from ortho-allyloxy chalcones through a one-pot sequence of Claisen rearrangement and 6-endo-trig cyclization, followed by olefin cross metathesis of the intermediate allyl flavanones with 2-methyl-2-butene. The synthetic utility of this route is illustrated for the synthesis of several naturally occurring prenyl flavanones.
KW  - tandem reactions
KW  - arenes
KW  - oxygen heterocycles
KW  - microwave chemistry
KW  - rearrangement
Y1  - 2020
U6  - https://doi.org/10.1002/ejoc.202001378
SN  - 1434-193X
SN  - 1099-0690
VL  - 2020
IS  - 47
SP  - 7373
EP  - 7384
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Wessig, Pablo
A1  - Budach, Dennis B.
A1  - Thünemann, Andreas F.
T1  - Dendrimers with Oligospiroketal (OSK) Building Blocks: Synthesis and Properties
JF  - Chemistry - a European journal
N2  - The development of novel dendrimers containing oligospiroketal (OSK) rods as building blocks is described. The linkage between the core unit (CU), branching units (BU), and OSK rods relies on the CuAAC reaction between terminal alkynes and azides. Two different strategies of dendrimer synthesis were investigated and it was found that the convergent approach is clearly superior to the divergent one. SAXS measurements and MD simulations indicate that the obtained dendrimer features a globular structure with very low density. Obviously, the OSK rods stabilize a rather loose mass-fractal structure.
KW  - click chemistry
KW  - dendrimers
KW  - molecular rods
KW  - oxygen heterocycles
KW  - SAXS
Y1  - 2015
U6  - https://doi.org/10.1002/chem.201501386
SN  - 0947-6539
SN  - 1521-3765
VL  - 21
IS  - 29
SP  - 10466
EP  - 10471
PB  - Wiley-VCH
CY  - Weinheim
ER  -