QUINOLINE-OXAZOLINE COMPOUNDS AND THEIR USE IN OXIDATION SYNTHESIS
申请人:Sigman Matthew Scott
公开号:US20110054176A1
公开(公告)日:2011-03-03
A quinoline-oxazoline compound having the formula:
where one of X
1
and X
2
is N and the other is C and one of R1, R2 and R3 is Z wherein Z is an oxazoline radical having the formula
such that when X
1
is N R2 is Z and R1 is absent, and when X
2
is N either R1 or R3 is Z and R2 is absent. R1 and R3 through R12 are independently H or a pendant moiety which does not interfere with coordination of either N in the quinoline compound with a coordination center. These compounds can be complexed with a suitable coordination center such as catalytically active palladium and can be highly useful in catalytically oxidizing alkenes with high regioselectivity.
Process for preparing enantiopure Lupanine and Sparteine
申请人:Studiengesellschaft Kohle mbH
公开号:EP2808326A1
公开(公告)日:2014-12-03
The present invention relates to processes for preparing enantiopure Lupanine and Sparteine.
本发明涉及制备对映纯Lupanine和Sparteine的过程。
PROCESS FOR CONVERTING LUPANINE INTO SPARTEINE
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:US20160096840A1
公开(公告)日:2016-04-07
The present invention relates to processes for preparing enantiopure Lupanine and Sparteine.
本发明涉及制备对映纯的狼毒碱和细叶碱的过程。
Process for the Preparation of Formic Acid
申请人:Schneider Daniel
公开号:US20110319657A1
公开(公告)日:2011-12-29
Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid and a tertiary amine (I) in a molar ratio of from 0.5 to 5 is produced by combining tertiary amine (I) and a formic acid source, from 10 to 100% by weight of the secondary components present therein are separated off and formic acid is removed by distillation in a distillation apparatus at a bottom temperature of from 100 to 300° C. and a pressure of from 30 to 3000 hPa abs from the liquid stream obtained, the bottom discharge from the distillation apparatus being separated into two liquid phases and the upper liquid phase being recycled to the formic acid source and the lower liquid phase being recycled for separating off the secondary components and/or to the distillation apparatus.
Characterization of a rhodium-sparteine complex, [((−)-sparteine)Rh(η4-COD)]+: Crystal structure and DNMR/DFT studies on ligand-rotation dynamics
作者:Antonio G. De Crisci、Vincent T. Annibale、Gordon K. Hamer、Alan J. Lough、Ulrich Fekl
DOI:10.1039/b917487g
日期:——
repulsion between COD and sparteine. 1H NMR exchange experiments (EXSY) demonstrate a dynamic process that results in an overall 180° rotation of the COD methine protons in solution (CD2Cl2) with a first-order rate constant of 460 s−1 at the coalescence temperature (314 K) and interpolated rate constant of 150 s−1 at 298 K. Temperature-dependent NMR studies yield ΔH‡ = 13.0 ± 0.3 kcal mol−1, ΔS‡ = −5