Lewis Acid-Catalyzed Allylation Reactions of Acylhydrazones with Tetraallyltin in Aqueous Media
作者:Shū Kobayashi、Tomoaki Hamada、Kei Manabe
DOI:10.1055/s-2001-15166
日期:——
Allylation reactions of various benzoylhydrazones with tetraallyltin were found to proceed smoothly in the presence of scandium triflate as a Lewis acid catalyst at ambient temperature in aqueous media, to afford the corresponding homoallylic amine derivatives in high yields. Three-component reactions of aldehydes, benzoylhydrazine, and tetraallyltin were also catalyzed by scandium triflate in the same media. Furthermore, a simple procedure to prepare oxazolidinone derivatives utilizing these reactions was developed.
A Mild and Efficient Three-Component Synthesis of Secondary and Tertiary Homoallylic Hydrazides
作者:Bum Seok Lee、Doo Ok Jang
DOI:10.1002/ejoc.201201757
日期:2013.5
Zn(ClO4)2·6H2O was developed for the syntheses of secondary and tertiary homoallylic hydrazides. Excellent chemoselectivities and diastereoselectivies were observed. Aldehydes as well as acyclic and cyclic ketones were well-suited to the reaction conditions and provided secondary and tertiary homoallylic hydrazides in excellent yields.
Catalyst-free allylation of 2-aminophenol–derived aldimines with allyltrichlorosilane under thermal conditions
作者:Kesa Venkatanna、Chinnasamy Ramaraj Ramanathan
DOI:10.1016/j.tetlet.2017.08.012
日期:2017.9
Allylation of 2-aminophenol-derived aldimines using allyltrichlorosilane undercatalystfreeconditions has been developed. This reaction afforded the corresponding homoallylic amines in good to excellent yields (68–94%). The salicylaldehyde-derived aldimines as well as benzoylhydrazone also found to react with allyltrichlorosilane smoothly under the same conditions, to furnish the corresponding homoallylic
Synthesis of homoallylic amines and acylhydrazides by tin powder-promoted multicomponent one-pot allylation reactions
作者:Junyan Ma、Danfeng Huang、Ke-Hu Wang、Yanli Xu、Siying Chong、Yingpeng Su、Ying Fu、Yulai Hu
DOI:10.1002/aoc.3472
日期:2016.7
efficient process for the synthesis of homoallylic amines and N′‐homoallylic hydrazides is developed from the one‐pot reaction of carbonyl compounds, amines or N‐acylhydrazines, allyllic bromide and tin powder using water as solvent. N‐Acylhydrazines are found to be more reactive than amines in these processes. They can react not only with aldehydes but also with ketones to give the corresponding N′‐homoallylic
Indium-Mediated Catalytic Enantioselective Allylation of <i>N</i>-Benzoylhydrazones Using a Protonated Chiral Amine
作者:Sung Jun Kim、Doo Ok Jang
DOI:10.1021/ja1035336
日期:2010.9.8
A catalytic enantioselective indium-mediatedallylation of N-benzoylhydrazones in conjunction with a protonated chiral amine affording enantioenriched homoallylic amines with an extremely high level of enantioselectivity and chemical yield was developed.