Iron-Catalyzed Contrasteric Functionalization of Allenic C(sp<sup>2</sup>)–H Bonds: Synthesis of α-Aminoalkyl 1,1-Disubstituted Allenes
作者:Yidong Wang、Sarah G. Scrivener、Xiao-Dong Zuo、Ruihan Wang、Philip N. Palermo、Ethan Murphy、Austin C. Durham、Yi-Ming Wang
DOI:10.1021/jacs.1c07512
日期:2021.9.22
An iron-catalyzed C–H functionalization of simple monosubstituted allenes is reported. An efficient protocol for this process was made possible by the use of a newly developed electron-rich and sterically hindered cationic cyclopentadienyliron dicarbonyl complex as the catalyst and N-sulfonyl hemiaminal ether reagents as precursors to iminium ion electrophiles. Under optimized conditions, the use of
Enantioselective Terminal Addition to Allenes by Dual Chiral Primary Amine/Palladium Catalysis
作者:Han Zhou、Yaning Wang、Long Zhang、Mao Cai、Sanzhong Luo
DOI:10.1021/jacs.7b00437
日期:2017.3.15
We herein describe a synergistic chiral primary amine/achiral palladium catalyzed enantioselective terminal addition to allenes with α-branched β-ketocarbonyls and aldehydes. The reactions afford allylic adducts bearing acyclic all-carbon quaternary centers with high regio- and enantioselectivity. A wide range of allenes including those aliphatic or 1,1'-disubstituted could be employed, thus expanding
Synthese regiospecifique d'allenes terminaux a partir de propargyltrimethylsilanes simples ou fonctionnels
作者:J. Pornet、D. Damour、L. Miginiac
DOI:10.1016/s0022-328x(00)99606-2
日期:1987.1
Protodesilylation of varied propargyltrimethylsilanes, using boron trifluorideacetic acid as reagent, give regiospecifically terminal allenes with very good yields. Yet, particular ω-functional propargyltrimethylsilanes may lead to vinylsilanes resulting from a ring-closing cyclisation reaction.
Rhenium-Catalyzed Diastereoselective Synthesis of Aminoindanes via the Insertion of Allenes into a C−H Bond
作者:Yoichiro Kuninobu、Peng Yu、Kazuhiko Takai
DOI:10.1021/ol101627x
日期:2010.10.1
Aminoindane derivatives were synthesized diastereoselectively by the treatment of aromatic imines with allenes in the presence of a catalytic amount of a rhenium complex, [HRe(CO)(4)](n). The allenes inserted into the aromatic C-H bonds.
PORNET J.; DAMOUR D.; MIGINIAC L., J. ORGANOMET. CHEM., 319,(1987) N 3, 333-343