摘要:
An α-iminoester derivative capable of being stably present under ordinary conditions; and a method of synthesizing various α-aminoester derivatives from the α-iminoester derivative in high yield. The derivative is a polymer-immobilized α-iminoester represented by the following general formula (1) (wherein R1 represents an alkyl chain having 1 or more carbon atoms and R2 represents hydrogen, halogeno, or optionally substituted alkyl, aryl, or alkoxy).
摘要:
The present invention provides a process for the preparation of a wide range of primary arylamines. The arylamines are prepared in two efficient, straightforward transformations: 1) an activated aryl group and an imine group are combined, in the presence of a transition metal catalyst, under conditions wherein the transition metal catalyst catalyzes the formation of a carbon-nitrogen bond between the activated carbon of the arene and the imine nitrogen; and 2) the resulting N-aryl imine is transformed, via any of a number of standard protocols, to the primary arylamine. The process of the invention may also be exploited in the preparation of vinylamines.
摘要:
The present invention provides a process for the preparation of a wide range of primary arylamines. The arylamines are prepared in two efficient, straightforward transformations: 1) an activated aryl group and an imine group are combined, in the presence of a transition metal catalyst, under conditions wherein the transition metal catalyst catalyzes the formation of a carbon-nitrogen bond between the activated carbon of the arene and the imine nitrogen; and 2) the resulting N-aryl imine is transformed, via any of a number of standard protocols, to the primary arylamine. The process of the invention may also be exploited in the preparation of vinylamines.
摘要:
A 1,3-oxazin-4-one derivative, represented by general formula (I), which is useful as a herbicide because it has a wide herbicidal spectrum and a potent herbicidal activity and is highly safe for useful crops, wherein R¹ represents lower alkyl, lower alkenyl, lower alkynyl, optionally substituted aryl or optionally substituted aralkyl; R² represents hydrogen or lower alkyl; R³ represents lower alkyl, optionally substituted aryl or optionally substituted aralkyl; and R⁴ and R⁵ represent each independently lower alkyl, or R⁴ and R⁵ are combined with each other to represent, together with the carbon atom to which they are bonded, a 3- to 8-membered carbocyclic group which may have a lower alkyl branch.
摘要翻译:由通式(I)表示的1,3-恶嗪-4-酮衍生物,其可用作除草剂,因为它具有宽的除草谱和强的除草活性,对有用的作物是高度安全的,其中R 1 表示低级烷基,低级烯基,低级炔基,任选取代的芳基或任选取代的芳烷基; R 2表示氢或低级烷基; R 3表示低级烷基,任选取代的芳基或任选取代的芳烷基; R 4和R 5各自独立地表示低级烷基,或者R 4和R 5彼此结合,与它们所键合的碳原子一起表示3-8 可能具有低级烷基支链的碳环基团。
摘要:
Die Verbindungen der Formel I, worin R¹ und R² unabhängig voneinander C₁-C₃₆-Alkyl, C₅-C₁₂-Cycloalkyl, C₇-C₉-Aralkyl oder durch C₁-C₃₆-Alkyl substituiertes C₇-C₉-Aralkyl bedeuten und R³ und R⁴ unabhängig voneinander Wasserstoff, ein Alkalimetall, C₁-C₃₆-Alkyl, Phenyl oder durch C₁-C₁₂-Alkyl substituiertes Phenyl sind, eignen sich zum Stabilisieren von organischem Material gegen thermischen, oxidativen und/oder aktinischen Abbau.
摘要:
Die Erfindung betrifft Cyclohexenol-Derivate der Formel in der R 1 , R 2 , R 3 , X und A die in der Beschreibung genannten Bedeutungen haben, Verfahren zur Herstellung dieser Verbindungen sowie ihre Verwendung zur Bekämpfung unerwünschten Pflanzenwuchses.
摘要:
&bgr;-Substituted γ-amino acids, &bgr;-substituted γ-amino acid derivatives, and &bgr;-substituted γ-amino acid analogs and (bio)isosteres and their use as chemotherapeutic agents are disclosed. The &bgr;-substituted γ-amino acid derivatives and &bgr;-substituted γ-amino acid analogs and (bio)isosteres are selective LAT1/4F2hc substrates, capable of passing through the blood-brain barrier, and exhibit rapid uptake and retention in tumors expressing the LAT1/4F2hc transporter. Methods of synthesizing the &bgr;-substituted γ-amino acid derivatives and &bgr;-substituted γ-amino acid analogs and (bio)isosteres and methods of using the compounds for treating tumors are also disclosed. The &bgr;-substituted γ-amino acid derivatives and &bgr;-substituted γ-amino acid analogs and (bio)isosteres exhibit an improved selectivity toward tumor cells expressing the LAT1/4F2hc transporter and accumulate in cancerous cells when administered to a subject in vivo. The &bgr;-substituted γ-amino acid derivatives and &bgr;-substituted γ-amino acid analogs and (bio)isosteres exhibit an increased efficacy on a variety of tumor types.