Highly Selective Reactions of Unbiased Alkenyl Halides and Alkylzinc Halides: Negishi-Plus Couplings
摘要:
High yielding stereo- and chemoselective Pd-catalyzed cross-couplings In THF at room temperature of alkenyl iodides and bromides with primary and secondary alkyl zinc iodides have been developed with the aid of N-methylmidazole as the key additive.
Cross‐Electrophile Coupling of Vinyl Halides with Alkyl Halides
作者:Keywan A. Johnson、Soumik Biswas、Daniel J. Weix
DOI:10.1002/chem.201601320
日期:2016.5.23
An improved method for the reductive coupling of aryl and vinyl bromides with alkylhalides that gave high yields for a variety of substrates at room temperature with a low (2.5 to 0.5 mol %) catalyst loading is presented. Under the optimized conditions, difficult substrates, such as unhindered alkenyl bromides, can be coupled to give the desired olefins with minimal diene formation and good stereoretention
Highly Selective Reactions of Unbiased Alkenyl Halides and Alkylzinc Halides: Negishi-Plus Couplings
作者:Arkady Krasovskiy、Bruce H. Lipshutz
DOI:10.1021/ol201307y
日期:2011.8.5
High yielding stereo- and chemoselective Pd-catalyzed cross-couplings In THF at room temperature of alkenyl iodides and bromides with primary and secondary alkyl zinc iodides have been developed with the aid of N-methylmidazole as the key additive.