155222-99-4Relevant articles and documents
Copper-Catalyzed Carbonylative Hydroamidation of Styrenes to Branched Amides
Yuan, Yang,Wu, Fu-Peng,Schünemann, Claas,Holz, Jens,Kamer, Paul C. J.,Wu, Xiao-Feng
, p. 22441 - 22445 (2020)
Amides are one of the most ubiquitous functional groups in synthetic and medicinal chemistry. Novel and rapid synthesis of amides remains in high demand. In this communication, a general and efficient procedure for branch-selective hydroamidation of vinylarenes with hydroxyamine derivatives enabled by copper catalysis has been developed for the first time. The reaction proceeds under mild conditions and tolerates a broad range of functional groups. Applying a chiral phosphine ligand, an enantioselective variant of this transformation was achieved, affording a variety of chiral α-amides with excellent enantioselectivities (up to 99 % ee) and high yields.
Regio- And Stereoselective (S N2) N -, O -, C - And S -Alkylation Using Trialkyl Phosphates
Banerjee, Amit,Hattori, Tomohiro,Yamamoto, Hisashi
, (2021/06/16)
Bimolecular nucleophilic substitution (S N 2) is one of the most well-known fundamental reactions in organic chemistry to generate new molecules from two molecules. In principle, a nucleophile attacks from the back side of an alkylating agent having a suitable leaving group, most commonly a halide. However, alkyl halides are expensive, very harmful, toxic and not so stable, which makes them problematic for laboratory use. In contrast, trialkyl phosphates are inexpensive, readily accessible and stable at room temperature, under air, and are easy to handle, but rarely used as alkylating agents in organic synthesis. Here, we describe a mild, straightforward and powerful method for nucleophilic alkylation of various N -, O -, C - and S -nucleophiles using readily available trialkyl phosphates. The reaction proceeds smoothly in excellent yield, and quantitative yield in many cases, and covers a wide range of substrates. Further, the rare stereoselective transfer of secondary alkyl groups has been achieved with inversion of configuration of chiral centers (up to 98% ee).
Erratum: Photoenzymatic Reductions Enabled by Direct Excitation of Flavin-Dependent 'Ene'-Reductases (J. Am. Chem. Soc. (2021) 143:4 (1735-1739) DOI: 10.1021/jacs.0c11494)
Sandoval, Braddock A.,Clayman, Phillip D.,Oblinsky, Daniel G.,Oh, Seokjoon,Nakano, Yuji,Bird, Matthew,Scholes, Gregory D.,Hyster, Todd K.
supporting information, p. 3662 - 3662 (2021/04/09)
Support by the Department of Energy was inadvertently left out of the Acknowledgments and a coauthor's name was misspelled in the Supporting Information. The scientific part of the manuscript remains unchanged. The complete correct Acknowledgment paragraph is as follows.
