Isolation and structure determination of a tetrameric sulfonyl dilithio methandiide in solution based on crystal structure analysis and 6Li/13C NMR spectroscopic data

Autor: Jürgen Vollhardt, Hans Jörg Lindner, Hans-Joachim Gais

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 2057-2063 (2020)

Dilithio sulfonyl methandiides are a synthetically and structurally highly interesting group of functionalized geminal dianions. Although very desirable, knowledge of the structure of dilithio methandiides in solution was lacking up to now. Herein, w

Externí odkaz: https://doaj.org/article/a7df99e667554b7886247cab15747683

Isolation and structure determination of a tetrameric sulfonyl dilithio methandiide in solution based on crystal structure analysis and 6Li/13C NMR spectroscopic data

Autor: Hans-Joachim Gais, Hans Jörg Lindner, Jürgen Vollhardt

Publikováno v: Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 2057-2063 (2020)
Beilstein journal of organic chemistry 16, 2057-2063 (2020). doi:10.3762/bjoc.16.172

Beilstein journal of organic chemistry 16, 2057-2063 (2020). doi:10.3762/bjoc.16.172
Published by Beilstein-Institut zur Förderung der Chemischen Wissenschaften, Frankfurt, Main

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa55dc1b6d2cda846d86f22b7bf61763
https://doi.org/10.3762/bjoc.16.172

Past, Present, and Future of Sun Protection Metrics

Autor: Christian, Surber, Steffen, Uhlig, Colson, Bertrand, Jürgen, Vollhardt, Uli, Osterwalder

Publikováno v: Current problems in dermatology. 55

Since the beginning of the development of sunscreen products, efforts have been made to measure and quantify the protection performance of such products. Early on an in vivo method was established that allowed statements on the sun protection perform

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::502cd894c19d7b84352f1e2c009a9184
https://pubmed.ncbi.nlm.nih.gov/34698049

What Are the Options Beyond SPF 50+? A View on Consumer Behavior and the Sensory Features of Sunscreens

Autor: Jürgen Vollhardt, Michele Marchini

Skin cancer rates have been on the rise for decades and are still growing in spite of the availability of high-performance sunscreens that provide sufficient protection against the damaging effect of UV radiation everywhere on this globe. This paper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fb13038e815368336809f4d4de348647
https://doi.org/10.1159/000517656

Ortho lithiation of lithium salts of alkyl phenyl sulfones: A 13C/1H NMR investigation

Autor: Jürgen Vollhardt, Hans-Joachim Gais

Publikováno v: Tetrahedron Letters. 29:1529-1532

The facile ortho lithiation of the lithium salts of alkyl phenylsulfones, 2a-c, to the o, α-dilithiosulfones 3a-c is described. Compounds 3a-c have been characterized by 13C and 1H NMR spectroscopy. The lithium salt 2d too, is preferentially lithiat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24061f6deb8ee2a0f2443fa3f04d16cb
https://doi.org/10.1016/s0040-4039(00)80343-3