摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von ionischen Flüssigkeiten auf Basis des Bistriflimid-Anions, wobei in einer ersten Stufe ein primäres aliphatisches Amin R-NH 2 mit Trifluormethansulfonsäureanhydrid Tf 2 O zum entsprechenden N-alkylierten Trifluormethansulfonsäureimid R-NTf 2 umgesetzt wird, das in einer zweiten Stufe mit einem Nukleophil Nu zu einer ionischen Flüssigkeit, bestehend aus dem entsprechenden alkylierten Nukleophil R-Nu + als Kation und dem Bistriflimid-Anion Tf 2 N - weiter umgesetzt wird: (I) dadurch gekennzeichnet, dass a) in der ersten Stufe ein in einem organischen Lösungsmittel gelöstes Alkylamin mit zumindest 3 Kohlenstoffatomen eingesetzt wird; b) in der zweiten Stufe ein Stickstoff-Heterozyklus oder eine Phosphorverbindung als Nukleophil eingesetzt wird; und c) beide Stufen in einem kontinuierlichen Fluss durchgeführt werden.
摘要:
The present invention provides novel Ruthenium-based transition metal complex catalysts comprising specific ligands, their preparation and their use in hydrogenation processes. Such complex catalysts are inexpensive, thermally robust, and olefin selective.
摘要:
A method of making a compound of formula (II) comprising the reaction of a compound of formula RCONH 2 with a compound of formula (III) R being a moiety having between 1 and 15 carbon atoms and optionally from 1 to 5 heteroatoms independently selected from oxygen, nitrogen and sulfur, and X and Y being independently selected from the group consisting of H, methyl, ethyl, OMe, Oet, and mixtures thereof; the reaction being performed in a solvent in the presence of a base. The method is useful for the inexpensive manufacture of certain commercially-valuable compounds, including some that have desirable cooling properties.
摘要:
Disclosed is a process for production of an aromatic compound represented by the formula (3), wherein the process comprises reacting a compound represented by the formula (1) with an olefin compound represented by the formula (2) in the presence of a transition metal complex: (1) wherein the Ar 1 ring represents an aromatic hydrocarbon ring or an aromatic heterocyclic ring; and the Ar 2 ring represents a heterocyclic ring having X 1 and N * , wherein X 1 represents a nitrogen or carbon atom, and N * represents a nitrogen atom bound to one of two contiguous atoms in the Ar 2 ring via a double bond; (2) wherein R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 18 carbon atoms; and (3) wherein Ar 1 , Ar 2 , X 1 , N * , R 1 , R 2 and R 3 are as defined above.
摘要:
The invention provides a novel method for synthesising M6G, and intermediates therefor. In order to synthesise M6G the major problem to overcome is to obtain the glycoside linkage with very high beta -selectivity since prior methods produce the alpha -anomer. The invention provides a method for the preferential synthesis of the beta -anomer of M6G which includes the step shown in Scheme 6: wherein use of DMAP is optional.