TY  - JOUR
A1  - Schmidt, Bernd
A1  - Riemer, Martin
T1  - Microwave-Promoted Deprenylation: Prenyl Ether as a Thermolabile Phenol Protecting Group
JF  - Synthesis
N2  - para-Substituted aryl prenyl ethers undergo a deprenylation reaction upon microwave irradiation. This offers the opportunity to use a prenyl ether as a thermolabile protecting group in the synthesis of natural products with a chromone structure, which proceeds via a tandem deprenylation/6-endo-cyclization sequence.
KW  - microwave irradiation
KW  - phenols
KW  - chromenes
KW  - protecting groups
KW  - Claisen rearrangement
Y1  - 2016
U6  - https://doi.org/10.1055/s-0035-1561366
SN  - 0039-7881
SN  - 1437-210X
VL  - 48
SP  - 1399
EP  - 1406
PB  - Thieme
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Schmidt, Bernd
A1  - Riemer, Martin
T1  - Synthesis of Allyl- and Prenylcoumarins via Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination
JF  - Synthesis
N2  - Allyl, dimethylallyl, crotyl, and prenyl ethers of various aromatic ortho-hydroxy carbonyl compounds undergo a tandem sequence of Claisen rearrangement, carbonyl olefination, and cyclization upon microwave irradiation in the presence of a stabilized ylide. The products are multiply substituted 6- or 8-allylated or prenylated coumarins (2H-chromen-2-ones).
KW  - aldehydes
KW  - coumarins
KW  - ketones
KW  - microwave irradiation
KW  - olefination
KW  - tandem reaction
KW  - ylides
Y1  - 2016
U6  - https://doi.org/10.1055/s-0035-1560501
SN  - 0039-7881
SN  - 1437-210X
VL  - 48
SP  - 141
EP  - 149
PB  - Thieme
CY  - Stuttgart
ER  -