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.
An efficient multicomponent one-pot reaction was developed for the synthesis of ,-disubstituted homoallylic hydrazides by treating ketones, acylhydrazines and allyl bromide with tin powder in tetrahydrofuran under reflux. The reaction proceeds smoothly without any catalyst under mild conditions to give the corresponding products in high yields.
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