Jan Freudenberg
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Explore the profile of Jan Freudenberg including associated specialties, affiliations and a list of published articles.
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138
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2152
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Recent Articles
1.
Jester F, Kaczun T, Maier S, Meiners P, Weigold S, Rominger F, et al.
Chemistry
. 2024 Oct;
31(2):e202403522.
PMID: 39417383
We investigated the Diels-Alder reaction of 6,13-bis(triisopropylsilylethynyl)pentacene (1) with small dienophiles such as (bridged) dihydronaphthalenes/cyclohexenes that yielded adducts at the central ring, the other dienophiles predominantly or exclusively attacked the...
2.
Britz L, Hammer M, Labuz G, Zielinska A, Jester F, Freudenberg J, et al.
Transl Vis Sci Technol
. 2024 Oct;
13(10):18.
PMID: 39388178
Purpose: The purpose of this study was to investigate the impact of calcium and phosphorus levels on optical deterioration in primary and secondary intraocular lens (IOL) calcification. Methods: A total...
3.
Elter M, Brosz M, Sucerquia D, Kuzhelev A, Kiesewetter D, Kurth M, et al.
J Am Chem Soc
. 2024 Sep;
146(40):27594-27599.
PMID: 39332820
Stronger chemical bonds withstand higher mechanical forces; thus, the rupture of single bonds is preferred over the rupture of double or triple bonds or aromatic rings. We investigated bond scission...
4.
Fuchs K, Oberhof N, Sauter G, Pollien A, Brodner K, Rominger F, et al.
Angew Chem Int Ed Engl
. 2024 Aug;
63(48):e202406384.
PMID: 39190530
Non-Kekulé quinoidal azaacences m-A (1 a,b) were synthesized and compared to their para- and ortho-quinodimethane analogues. m-A display high diradical characters (1 b: y = 0.88) due to their meta-quinodimethane...
5.
Freudenberg J, Bunz U
J Am Chem Soc
. 2024 Jun;
146(25):16937-16949.
PMID: 38862130
The higher acenes and azaacenes (>(aza)heptacenes) are fascinating, yet elusive materials. Their reactivity and sensitivity increases concomitantly with their size. In recent years, confinement techniques, that is isolation of acenes...
6.
Zong W, Hippchen N, Zeitter N, Maier S, Ludwig P, Rominger F, et al.
J Am Chem Soc
. 2024 Feb;
146(9):5793-5798.
PMID: 38413006
The symmetrical 7,16-diaza-6,8,15,17-tetrakis(triisopropylsilylethynyl)heptacene was obtained by a Pd-catalyzed reaction of a 2,3-diamino-1,4-diethynylanthracene with a 2,3-dibromo-1,4-diethynyl anthracene. Positioning the TIPS-ethynyl groups adjacent to the central ring suppresses dimerization via [4+4] cycloadditions...
7.
Sterenborg R, Steinbrenner I, Li Y, Bujnis M, Naito T, Marouli E, et al.
Nat Commun
. 2024 Jan;
15(1):888.
PMID: 38291025
To date only a fraction of the genetic footprint of thyroid function has been clarified. We report a genome-wide association study meta-analysis of thyroid function in up to 271,040 individuals...
8.
Ludwig P, Rominger F, Freudenberg J, Bunz U
Angew Chem Int Ed Engl
. 2024 Jan;
63(13):e202316902.
PMID: 38180106
We report soluble tetrakis-biphenylyl substituted pentacenes comprised of sp carbons and synthesized from pentacene-5,7,12,14-tetraone. Intramolecular Yamamoto coupling of two tetrakis(chlorobiphenylyl)pentacenes yields helical, doubly wrapped pentacenes, in which the quaterphenylene units...
9.
Ehjeij D, Rominger F, Bunz U, Freudenberg J, Mullen K
Angew Chem Int Ed Engl
. 2023 Dec;
63(8):e202312040.
PMID: 38084633
The solvent and catalyst free thermolysis of biphenylenes at 350 °C furnishes [n]cyclo-ortho-phenylenes ([n]COPs, n=4-10) in one step and in high yields. At 400 °C biphenylene dimerizes into tetraphenylene, but...
10.
Gelfman S, Moscati A, Huergo S, Wang R, Rajagopal V, Parikshak N, et al.
Nat Commun
. 2023 Nov;
14(1):7300.
PMID: 37949852
Anterior Uveitis (AU) is the inflammation of the anterior part of the eye, the iris and ciliary body and is strongly associated with HLA-B*27. We report AU exome sequencing results...