Mild and Low-Pressure<i>fac</i>-Ir(ppy)<sub>3</sub>-Mediated Radical Aminocarbonylation of Unactivated Alkyl Iodides through Visible-Light Photoredox Catalysis
作者:Shiao Y. Chow、Marc Y. Stevens、Linda Åkerbladh、Sara Bergman、Luke R. Odell
DOI:10.1002/chem.201601694
日期:2016.6.27
unactivated alkyl iodides employing a fac‐Ir(ppy)3‐catalyzed radical aminocarbonylation protocol has been developed. Using a two‐chambered system, alkyl iodides, fac‐Ir(ppy)3, amines, reductants, and CO gas (released ex situ from Mo(CO)6), were combined and subjected to an initial radical reductive dehalogenation generating alkyl radicals, and a subsequent aminocarbonylation with amines affording a
Tandem Photoredox Catalysis: Enabling Carbonylative Amidation of Aryl and Alkylhalides
作者:José A. Forni、Nenad Micic、Timothy U. Connell、Geethika Weragoda、Anastasios Polyzos
DOI:10.1002/anie.202006720
日期:2020.10.12
visible‐light‐mediated carbonylative amidation of aryl, heteroaryl, and alkyl halides. A tandem catalytic cycle of [Ir(ppy)2(dtb‐bpy)]+ generates a potent iridium photoreductant through a second catalytic cycle in the presence of DIPEA, which productively engages aryl bromides, iodides, and even chlorides as well as primary, secondary, and tertiary alkyl iodides. The versatile in situ generated catalyst is compatible
The present invention relates to modulators of muscarinic receptors. The present invention also provides compositions comprising such modulators, and methods therewith for treating muscarinic receptor mediated diseases.
Aminoborohydrides. 3. A facile reduction of tertiary amides to the corresponding amines and alcohols in high purity using lithium aminoborohydrides. Sterically controlled selective CN or CO bond cleavage
作者:Gary B. Fisher、Joseph C. Fuller、John Harrison、Christian T. Goralski、Bakthan Singaram
DOI:10.1016/s0040-4039(00)77498-3
日期:1993.2
Lithiumaminoborohydrides (LiABH3), obtained by the reaction of n-BuLi with amine-boranes, are powerful reducing agents for the reduction of tertiary amides to the correspondingamines or alcohols. Lithium pyrrolidinoborohydride (LiPyrrBH3) and lithium diisopropylaminoborohydride (LiH3BN(i-Pr)2) reduce both aliphatic and aromatic tertiary amides to give either the corresponding alcohol or amine, depending
A liquid crystal device in which the liquid crystal material comprises or contains a compound having ferro- electric spontaneous polarisation properties, the compound being of the formula:
Where L is a liquid crystal residue or liquid crystal compatible material having a terminal cyclic structure directly connected to the asymmetric carbon centre C*, R1 is selected from C1-4-alkyl and halogen and R2 is selected from alkyl, alkoxy, alkylthio, halo-alkyl & -alkoxy, alkoxyalkyl, halogeno, alkyl-carbonyl & -carbonyloxy and alkoxy -carbonyl and -carbonyloxy.