New Highly Nucleophilic and Practically Accessible Chlorocarbenoids for Carbonyl Olefination
作者:Chia-Chung Tsai、Ching-Ting Chien、Yu-Cheng Chang、Huan-Chang Lin、Tu-Hsin Yan
DOI:10.1021/jo050455c
日期:2005.7.1
bimetallic species resulted in the generation of a highly nucleophilic and practically convenient chloromethylenetitanium complex, which efficiently effected condensation even with enolizable or inert carbonyl compounds, such as sterically congested ketones, to provide vinyl chloride compounds.
Stereoselective Synthesis of <i>Z</i> Alkenyl Halides via Julia Olefination
作者:Marie-Eve Lebrun、Paul Le Marquand、Carl Berthelette
DOI:10.1021/jo052370h
日期:2006.3.1
Julia olefination between alpha-halomethyl sulfones and a variety of aldehydes afforded alkenyl halides in good to excellent yields with high E/Z stereo selectivities. Sulfones were readily prepared in two or three steps from commercially available reagents in good yields. Optimization revealed that the nature of the Z solvent, the base, and the additive were crucial to obtain the desired alkenyl halides.
Pauly; Neukam, Chemische Berichte, 1908, vol. 41, p. 4151
作者:Pauly、Neukam
DOI:——
日期:——
Borsche; Heimbuerger, Chemische Berichte, 1915, vol. 48, p. 456