Metal Amides as the Simplest Acid/Base Catalysts for Stereoselective Carbon-Carbon Bond-Forming Reactions
作者:Yasuhiro Yamashita、Shū Kobayashi
DOI:10.1002/chem.201300908
日期:2013.7.15
paper, new possibilities for metalamides are described. Although typical metalamides are recognized as strong stoichiometric bases for deprotonation of inert or less acidic hydrogen atoms, transition‐metalamides, namely silver and copper amides, show interesting abilities as one of the simplestacid/basecatalysts in stereoselectivecarbon–carbon bond‐forming reactions.
Catalytic asymmetric endo-selective [3+2] cycloaddition reactions of Schiff bases of α-aminophosphonates with olefins using chiral metal amides
作者:Yasuhiro Yamashita、Liang Cheng Nam、Mark J. Dutton、Susumu Yoshimoto、Shū Kobayashi
DOI:10.1039/c5cc07066j
日期:——
A Catalytic asymmetric endo-selective [3+2] cycloaddition reactions of Schiff bases of [small alpha]-aminophosphonates with olefins are described. While efficient asymmetric synthesis of several phosphonate analogues of proline derivatives is important in...
Yamashita, Yasuhiro; Guo, Xun-Xiang; Takashita, Ryuta, Journal of the American Chemical Society, 2010, vol. 132, p. 3262 - 3263
作者:Yamashita, Yasuhiro、Guo, Xun-Xiang、Takashita, Ryuta、Kobayashi, Shu
DOI:——
日期:——
Construction of 1H-pyrrol-2-ylphosphonates via [3+2] cycloaddition of phosphate azomethine ylides with ynones
作者:Jiang Meng、Di Wu、Ying Shi、Xingxin Yu、Wei-Ping Deng
DOI:10.1016/j.tet.2014.12.091
日期:2015.2
An efficient route for the construction of 1H-pyrrol-2-ylphosphonates via the [3+2] cycloaddition of phosphonate azomethine ylides with ynones is described. This transformation proceeds with good functional group tolerance under mild conditions with good efficiency and selectivity. And the synthesis of 1H-pyrrol-2-ylphosphonates could also be achieved via the three-component reaction of benzaldehydes, aminomethyl phosphonates and ynones. (C) 2015 Elsevier Ltd. All rights reserved.