Highly Enantioselective Radical Addition to <i>N</i>-Benzoyl Hydrazones Using Chiral Ammonium Salts
作者:Doo Ok Jang、Sang Yoon Kim
DOI:10.1021/ja807685r
日期:2008.12.3
In the presence of a protonated cinchonine derivative, radicaladdition reactions proceeded efficiently, affording addition adducts in high yields with an extremely high enantioselectivity. The chiralammonium salt was recyclable after a simple aqueous workup. The reaction provides environmentally benign reaction conditions.
One-pot synthesis of hydrazine derivatives from aldehydes via radical addition reactions
作者:Ji Hye Kim、Doo Ok Jang
DOI:10.1016/j.tetlet.2018.06.007
日期:2018.7
A one-pot procedure for the synthesis of hydrazine derivatives from aldehydes via radical addition reactions was developed. Lewis acids promoted both the condensation between aldehydes and benzhydrazide, and the alkyl radical addition to the Cdbnd N bond of hydrazones, affording moderate-to-high yields of hydrazine derivatives. The present process provides a tin-free radical, sustainable, and eco-friendly