A process for producing a compound of formula (I): comprising a 1,4-diketone of formula (II): a primary amine of formula (III): an amine salt or an inorganic salt of an organic acid Reacting in the presence of a catalyst comprising a salt comprising: wherein R 1 and R 2 are the same or different and H; linearly or branched And may be selected from any one or more of C 1 -C 6 alkyl; C 1 -C 6 alkoxy group; substituted or unsubstituted by a halogen group, or R 1 and R 2 together, the chemical formula CR a R b , wherein R a and R b are the same or different and are selected from any one or more of C 1 to C 11 alkyl groups. ) Represents an alkylidene group, and , R 3 is selected from any one or more of C 1 -C 6 alkyl groups].
Optimal structure of acidic ionic liquids for synthesis of tetraphenylporphyrins
作者:Satoshi Kitaoka、Maho Motohiro、Kaoru Nobuoka
DOI:10.1142/s1088424622500602
日期:2022.12
[HC8im][CF3CO2] is the optimal ionic liquid for the tetraphenylporphyrinsynthesis. In addition, we also investigated the influence of electron-withdrawing and electron-donating substituents at the C(2), C(4), and C(5) positions of the imidazolium cation of the acidic ionic liquids on the synthesis of tetraphenylporphyrins. The highest tetraphenylporphyrin yields were obtained in [HC8mim][CF3CO2], which
研究了用于四苯基卟啉合成的最佳酸性离子液体的结构,重点研究了离子液体的阳离子结构。调查在[碳氢化合物nim][CF 3 CO 2 ] (n=1-12)与不同长度的咪唑N(1)位烷基表明当烷基链长为C8时四苯基卟啉的产率最高(20%),表明[HC 8 im][ CF 3 CO 2 ]是四苯基卟啉合成的最佳离子液体。此外,我们还研究了酸性离子液体咪唑阳离子C(2)、C(4)和C(5)位的吸电子和给电子取代基对四苯基卟啉合成的影响。在[HC 8 mim][CF 3 CO 2中获得了最高的四苯基卟啉收率], 这表明在 N(1) 位置具有辛基和在 C(2) 位置具有甲基的咪唑阳离子是最佳结构。
Separations with ionic liquid solvents
申请人:Chevron Phillips Chemical Company LP
公开号:US10227274B2
公开(公告)日:2019-03-12
Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.
PREPARATION OF AN ATORVASTATIN INTERMEDIATE USING A PAAL-KNORR CONDENSATION
申请人:C.P. Pharmaceuticals International C.V.
公开号:EP1861364B1
公开(公告)日:2011-05-11
Separations With Ionic Liquid Solvents
申请人:Chevron Phillips Chemical Company LP
公开号:US20150133711A1
公开(公告)日:2015-05-14
Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.