Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Martin Pawliczek"'
Publikováno v:
Chemical Science. 9:1231-1235
Herein, we report the first alkylative kinetic resolution of vicinal alcohols realized by cooperative use of a chiral quaternary ammonium salt and an achiral borinic acid. In addition, a catalytic regioselective alkylation of a secondary alcohol in t
Publikováno v:
Organic Letters. 19:1914-1917
The enantioselective synthesis of (+)-lysergol was completed in 12 steps and an overall yield of 13% starting from a known literature precursor. The key step relies on a domino reaction containing a formal anti-carbopalladation, which is terminated b
Autor:
Saman Zakpur, Martin Pawliczek, Yuto Shimazaki, Kevin M. Oberg, Hidenori Kimura, Keiji Maruoka, Takuya Hashimoto
Publikováno v:
Chemical communications (Cambridge, England). 54(51)
1,4-Benzoxazin-3-one is a scaffold which is found in a variety of biologically active molecules. Because of its unique structure and drug-like activities, 1,4-benzoxazin-3-ones have been widely used in drug discovery. However, just a few methods have
Publikováno v:
European Journal of Organic Chemistry. 2015:6278-6288
Enynes substituted with a tertiary hydroxyl group attached to one of the alkyne units react with iodobenzenes in a Pd-catalyzed domino reaction. The cascade consists of an intermolecular anti-carbopalladation and a terminating Heck reaction. This pro
Publikováno v:
Chemistry - A European Journal. 21:12303-12307
An intramolecular domino process consisting of a formal anti-carbopalladation followed by Heck reaction is realized. Complex oligo(hetero)cyclic scaffolds are efficiently obtained in one synthetic step from easily obtainable enyne precursors. In cont
Publikováno v:
Angewandte Chemie International Edition. 54:4119-4123
Formal anti-carbopalladation reactions of CC triple bonds are uncommon, but highly useful transformations. Alkynes can be designed to give anti-carbopalladation products. Prerequisite is the exclusion of other reaction pathways to provoke the cis-
Publikováno v:
Angewandte Chemie. 127:4192-4196
Formale anti-Carbopalladierungsreaktionen von C-C-Dreifachbindungen sind ungewohnliche, aber auserst nutzliche Transformationen. Alkine, die gezielt anti-Carbopalladierungsprodukte ergeben, werden vorgestellt. Voraussetzung ist der Ausschluss anderer
Exploiting amphiphilicity: facile metal free access to thianthrenes and related sulphur heterocycles
Publikováno v:
Chemical Communications. 51:9165-9168
Benzodithioloimines are reacted with arynes or alkynes substituted with electron-withdrawing groups to afford the corresponding thianthrene or benzo[b][1,4]dithiine derivatives. The transformation takes place under mild reaction conditions without an
Autor:
Peter G. Jones, Martin Pawliczek, Daniel B. Werz, Markus Leibeling, Jörg Grunenberg, Bastian Milde
Publikováno v:
Angewandte Chemie. 127:1347-1351
Ein neuartiger Typ von π-Helicenen, deren π-System auf eine all-s-cis-Z,Z,…-Oligoenkette reduziert ist, wird vorgestellt. Eine Dominosequenz aus bis zu vier aufeinanderfolgenden Carbopalladierungen und einer abschliesenden Stille-Kreuzkupplung wu
Publikováno v:
ChemInform. 47
A variety of dithiepines (III), (V), (IX), and (XI) is prepared by a TiF4-catalyzed reaction of symmetrical benzodithioloimines with cyclopropane diesters (II) and (IV).