Accelerated Amination of Baylis–Hillman Acetates Under Ultrasound Irradiation
摘要:
The amination of the Baylis-Hillman acetates with primary amines can be dramatically promoted with improved yields and shortened reaction time under ultrasound irradiation. The selected aromatic, heteroaromatic, and aliphatic amines were investigated as the effective candidates for the sonochemical transformation.
Accelerated Amination of Baylis–Hillman Acetates Under Ultrasound Irradiation
作者:Shao-Qin Ge、Yun-Yu Hua、Min Xia
DOI:10.1080/00397910903219310
日期:2010.6.16
The amination of the Baylis-Hillman acetates with primary amines can be dramatically promoted with improved yields and shortened reaction time under ultrasound irradiation. The selected aromatic, heteroaromatic, and aliphatic amines were investigated as the effective candidates for the sonochemical transformation.
Transition-Metal-Free Cascade Synthesis of 4-Quinolones: Umpolung of Michael Acceptors via Ene Reaction with Arynes
作者:R. Santhosh Reddy、Chandraiah Lagishetti、I. N. Chaithanya Kiran、Hengyao You、Yun He
DOI:10.1021/acs.orglett.6b01830
日期:2016.8.5
adducts through a cascade sequence involving an insertion/cyclization/enereaction process to afford 4-quinolones in high yields with a broad substrate scope under mild reaction conditions. Essentially, an umpolung of reactivity at the β carbon of α,β-unsaturated ketone has been achieved by an inverse electron demand aryne–ene reaction to provide a C-arylated product.