Copper-Catalyzed Benzylic C−H Oxygenation under an Oxygen Atmosphere via N-H Imines as an Intramolecular Directing Group
摘要:
Copper-catalyzed benzylic C-H oxygenation under an oxygen atmosphere was developed starting from carbonitriles and Grignard reagents via N-H imine intermediates. The present process is characterized by the following two-step sequence in a one-pot manner: (1) addition of Grignard reagents to carbonitriles to form N-H imines and (2) benzylic C-H oxygenation (C=O bond formation) triggered by 1,5-hydrogen atom transfer with transient iminyl copper species.
Copper-Catalyzed Benzylic C−H Oxygenation under an Oxygen Atmosphere via N-H Imines as an Intramolecular Directing Group
摘要:
Copper-catalyzed benzylic C-H oxygenation under an oxygen atmosphere was developed starting from carbonitriles and Grignard reagents via N-H imine intermediates. The present process is characterized by the following two-step sequence in a one-pot manner: (1) addition of Grignard reagents to carbonitriles to form N-H imines and (2) benzylic C-H oxygenation (C=O bond formation) triggered by 1,5-hydrogen atom transfer with transient iminyl copper species.
The present invention relates to compounds that bind to chemokine receptors, and having the formula
1
wherein each A, X, Y, R
1
, R
2
and R
3
are substituents. The present invention also relates to methods of using such compounds, such as in treating HIV infection and inflammatory conditions such as rheumatoid arthritis. Furthermore, the present invention relates to methods to elevate progenitor and stem cell counts, as well as methods to elevate white blood cell counts, using such compounds.
Cyclization Reactions of 2,3-Bis(2-cyanophenyl)propionitriles. III. Substituent Effect on the Carbanion Reactivies of the Propionitriles and Tautomerism of 5-Acetamido-11-cyanoindeno[1,2-<i>c</i>]isoquinolines
作者:Kazuo Ando、Takashi Tokoroyama、Takashi Kubota
DOI:10.1246/bcsj.53.2885
日期:1980.10
The substituent effect in the base-catalyzed cyclization reaction of 2,3-bis(2-cyanophenyl)propionitriles (1) to 5-amino-11-cyano-11H-indeno[1,2-c]isoquinolines has been studied and the result is discussed in terms of the dichotomic carbanion reactivities of 1. Preparation of 1 and the tautomerism of 5-acetamido-11-cyanoindeno[1,2-c]isoquinolines between 5H and 11H structures are described.
The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
The present invention relates to compounds that bind to chemokine receptors, and having the formula
wherein each A, X, Y, R
1
, R
2
and R
3
are substituents. The present invention also relates to methods of using such compounds, such as in treating HIV infection and inflammatory conditions such as rheumatoid arthritis. Furthermore, the present invention relates to methods to elevate progenitor and stem cell counts, as well as methods to elevate white blood cell counts, using such compounds.
The present invention relates to compounds that bind to chemokine receptors, and having the formula
wherein each A, X, Y, R1, R2 and R3 are substituents. The present invention also relates to methods of using such compounds, such as in treating HIV infection and inflammatory conditions such as rheumatoid arthritis. Furthermore, the present invention relates to methods to elevate progenitor and stem cell counts, as well as methods to elevate white blood cell counts, using such compounds.