Iron-Catalyzed Reductive Ethylation of Imines with Ethanol
作者:Marie Vayer、Sara P. Morcillo、Jennifer Dupont、Vincent Gandon、Christophe Bour
DOI:10.1002/anie.201800328
日期:2018.3.12
complex as precatalyst. This approach opens new perspectives in this area as it enables the synthesis of unsymmetric tertiary amines from readily available substrates and ethanol as a C2 building block. A variety of imines bearing electron‐rich aryl or alkyl groups at the nitrogen atom could be efficiently reductively alkylated without the need for molecular hydrogen. The mechanism of this reaction, which
Organocatalytic Aziridine Synthesis Using F<sup>+</sup> Salts
作者:Sean P. Bew、Shirley A. Fairhurst、David L. Hughes、Laurent Legentil、John Liddle、Paolo Pesce、Sanket Nigudkar、Martin A. Wilson
DOI:10.1021/ol901784m
日期:2009.10.15
This paper describes a unique application of the fluoronium cation (F+) as an organocatalyst for mediating the reaction between N-substituted imines and ethyl diazoacetate affording excellent yields of N-substituted aziridines.
Synthesis and application of a new pseudo C2-symmetric tertiary diamine for the enantioselective addition of MeLi to aromatic imines
作者:Quentin Perron、Alexandre Alexakis
DOI:10.1016/j.tetasy.2007.10.018
日期:2007.10
A new tertiary pseudo C2-symmetric diamine derived from (1S,2S)-(+)-pseudoephedrine was synthesized and tested in the enantioselective addition of methyllithium on different aromatic imines. A comparative study with a similar C2-symmetric ligand derived from the cyclohexane diamine showed better reactivity and enantioselectivity up to 91%.
Cobalt-catalyzed ortho-alkenylation of aromatic aldimines via chelation-assisted C–H bond activation
作者:Takeshi Yamakawa、Naohiko Yoshikai
DOI:10.1016/j.tet.2013.02.092
日期:2013.6
An ortho-alkenylation reaction of an aromatic aldimine with an internal alkyne is efficiently promoted by a cobalt catalyst generated from CoBr2, triarylphosphine, and iPrMgBr. The reaction takes place under mild room-temperature conditions to afford, upon acidic hydrolysis, a variety of ortho-alkenylated aromatic aldehydes in moderate to excellent yields. The neighboring formyl and alkenyl groups
Cooperative Catalysis with Chiral Brønsted Acid-Rh<sub>2</sub>(OAc)<sub>4</sub>: Highly Enantioselective Three-Component Reactions of Diazo Compounds with Alcohols and Imines
作者:Wenhao Hu、Xinfang Xu、Jing Zhou、Wei-Jun Liu、Haoxi Huang、Juan Hu、Liping Yang、Liu-Zhu Gong
DOI:10.1021/ja801755z
日期:2008.6.1
An asymmetric three-componentreaction of diazocompounds and alcohols with imines catalyzed cooperatively by a rhodium complex and a chiral Brønsted acid provides a general and efficient entry to beta-amino-alpha-hydroxyl acid derivatives in high yields with excellent stereoselectivities.