Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Viktoria H. Gessner"'
Autor:
Felix Krischer, Viktoria H. Gessner
Publikováno v:
JACS Au, Vol 4, Iss 5, Pp 1709-1722 (2024)
Externí odkaz:
https://doaj.org/article/01727b109c95433a884403d7a5e21f1e
Publikováno v:
Molecules, Vol 25, Iss 4, p 796 (2020)
Cyclic amino(ylide)carbenes (CAYCs) are the ylide-substituted analogues of N-heterocyclic Carbenes (NHCs). Due to the stronger π donation of the ylide compared to an amino moiety they are stronger donors and thus are desirable ligands for catalysis.
Externí odkaz:
https://doaj.org/article/3a02528cd714414f9625534b19af73e9
Publikováno v:
Molecules, Vol 17, Iss 12, Pp 14685-14699 (2012)
The well-known Ugi reaction of aldehydes with amines, carboxylic acids and isocyanides leads to the formation of acyclic α-acylaminocarboxamides. Replacement of the carboxylic acid derivatives with β-acyl substituted acrylic acids gives access to h
Externí odkaz:
https://doaj.org/article/aa04e6decc134a8fb9f204a15e426748
Autor:
Viktoria H. Gessner
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 3, Pp o374-o374 (2014)
The title compound, C19H17PS2, results from the direct deprotonation of diphenylmethylphosphine sulfide and subsequent reaction with diphenyl disulfide. The C—P and C—S bond lengths of 1.8242 (18) and 1.8009 (18) Å, respectively, of the central
Externí odkaz:
https://doaj.org/article/e9a8d4d9d2f8405286f03984213ced58
Publikováno v:
Inorganics, Vol 4, Iss 4, p 40 (2016)
The synthesis of [H2C(PPh2=NSiMe3)(SO2Ph)] (1) and its mono- and dimetalation are reported. Due to the strong anion-stabilizing abilities of the iminophosphoryl and the sulfonyl group monometalation to 1-K and dimetalation to 1-Li2 proceed smoothly w
Externí odkaz:
https://doaj.org/article/16a4c839887141e39eac500a3a8bd5a4
Autor:
Viktoria H. Gessner
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 4, Pp o1045-o1045 (2012)
The title compound, C21H21O2PS2, was obtained from the corresponding dilithio methandiide by treatment with iodomethane. The bond lengths and angles deviate considerably from those in the dimetallated compound. These differences are most pronounced i
Externí odkaz:
https://doaj.org/article/d55f02d5bfcd4ca58a77d69414c9689b
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 5, Pp o956-o956 (2009)
The title compound, C16H34N2, is a chiral diamine with fixed R configuration at both stereogenic carbon centres of the cyclohexane backbone. Due to their different substituents, the two N atoms also become stereogenic. In the crystal structure, the c
Externí odkaz:
https://doaj.org/article/6aa3ce353d7e474a9b959be311a7c289
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 2, Pp o383-o383 (2009)
The title compound, C19H27N2O+·Br−, is the hydrobromide of the trapping product of lithiated N,N,N′,N′-tetramethylethylenediamine (TMEDA) with benzophenone. Thereby, the N atom of the NMe2 group is selectively protonated and the respective tra
Externí odkaz:
https://doaj.org/article/0b5c30105fc24e068e9a1090c134fe4f
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 10, Pp o1950-o1950 (2008)
The title compound, C26H34NSi2+·Cl−, shows chirality at silicon. Because of its highly selective synthesis with an e.r. of >99:1 by means of a racemic resolution with mandelic acid, the free disilane is of great importance to the chemistry of high
Externí odkaz:
https://doaj.org/article/c0fdf44635e844fa871a53f2542ba04b
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 4, Pp o687-o687 (2008)
The molecule of the title compound, C8H18N2, possesses C2 symmetry. Owing to its stereochemistry, it is used in the synthesis of chiral ligands and metal complexes for asymmetric synthesis. The cyclohexane ring shows a chair conformation with the ami
Externí odkaz:
https://doaj.org/article/eb8ac83798244003aee01ec63699be22