Synthesis of Oxazolidinones and Derivatives through Three-Component Fixation of Carbon Dioxide
作者:Congmin Mei、Yibo Zhao、Qianwei Chen、Changsheng Cao、Guangsheng Pang、Yanhui Shi
DOI:10.1002/cctc.201800142
日期:2018.7.19
three‐component fixation of atmospheric CO2 with readily available 1,2‐dichloroethane and aromatic amine toward oxazolidinones catalyzed by in situ NHC was developed. The reaction occurred in good to excellent yields with good generality and wide functional group tolerance, including challenging steric hindered substituted‐dichloroethane (e.g. 1,2‐dichloropropane and 2,3‐dichlorobutane). The catalytic system
Copper-Catalyzed One-Pot Synthesis of <i>N</i>-Aryl Oxazolidinones from Amino Alcohol Carbamates
作者:William Mahy、Pawel K. Plucinski、Christopher G. Frost
DOI:10.1021/ol502322c
日期:2014.10.3
sequential intramolecular cyclization of aminoalcoholcarbamates followed by Cu-catalyzed cross-coupling with aryl iodides under mild conditions has been developed. The reaction occurred in good yields and tolerated aryl iodides containing functionalities such as nitriles, ketones, ethers, and halogens. Heteroaryl iodides and substituted aminoalcoholcarbamates were also well tolerated.
A One-Pot Synthesis of <i>N</i>
-Aryl-2-Oxazolidinones and Cyclic Urethanes by the Lewis Base Catalyzed Fixation of Carbon Dioxide into Anilines and Bromoalkanes
作者:Teemu Niemi、Jesus E. Perea-Buceta、Israel Fernández、Otto-Matti Hiltunen、Vili Salo、Sari Rautiainen、Minna T. Räisänen、Timo Repo
DOI:10.1002/chem.201602338
日期:2016.7.18
catalytic amounts of an organosuperbase such as Barton's base enables this transformation to proceed with high yields and exquisite substrate functional‐group tolerance under ambient CO2 pressure and mild temperature. This report also provides the first proof‐of‐principle for the single‐operation synthesis of elusive seven‐membered ring cyclic urethanes.
Palladium Catalyzed C−O Coupling of Amino Alcohols for the Synthesis of Aryl Ethers
作者:Malte S. Mikus、Carina Sanchez、Cary Fridrich、Jay F. Larrow
DOI:10.1002/adsc.201901302
日期:2020.1.23
containing aryl ethers are common pharmacophore motifs that continue to emerge from drug discovery efforts. As aminoalcohols are readily available building blocks, practical methodologies for incorporating them into more complex structures are highly desirable. We report our efforts to explore the application of Pd‐catalyzed C−O coupling methods to the arylation of 1,2‐ and 1,3‐aminoalcohols. We established
Dual Nickel Photocatalysis for <i>O</i>-Aryl Carbamate Synthesis from Carbon Dioxide
作者:Aleksi Sahari、Jukka Puumi、Jere K. Mannisto、Timo Repo
DOI:10.1021/acs.joc.3c00023
日期:2023.3.17
photocatalyst-mediated reduction of Ni(II) to Ni(I) and subsequent oxidative addition of the aryl halide. The physical properties of the photocatalyst were critical for promotingformation of O-aryl carbamates over various byproducts. Nine new phthalonitrile photocatalysts were synthesized, which exhibited properties that were vital to achieve high selectivity and activity.