Functionalization of aliphatic tertiary amines mediated by hexachloroethane/cat. copper: synthesis of propargylic amines and methylene-bridged bis-1,3-dicarbonyl derivatives
作者:Xiaoliang Xu、Zhichuang Ge、Dongping Cheng、Xiaonian Li
DOI:10.3998/ark.5550190.0013.810
日期:——
Copper-catalyzed functionalization of aliphatictertiaryamines with the assistance of C2Cl6 is described. This method details the alkynylation of aliphatictertiaryamines and the synthesis of methylene-bridgedbis-1,3-dicarbonylderivatives. The mechanism of the selective oxidation of aliphatictertiaryamines was also discussed. A broad spectrum of aliphatictertiaryamines was examined in this
Aerobic cross-dehydrogenative coupling of terminal alkynes and tertiary amines by a combined catalyst of Zn<sup>2+</sup>and OMS-2
作者:Xiongjie Jin、Kazuya Yamaguchi、Noritaka Mizuno
DOI:10.1039/c4ra05105j
日期:——
In the presence of ZnBr2 and a manganese oxide-based octahedral molecular sieve (OMS-2), cross-dehydrogenativecoupling of a wide range of terminalalkynes and tertiary amines to propargylamines efficiently proceeded using molecular oxygen as the terminal oxidant.
Copper/Diethyl Azodicarboxylate Mediated Regioselective Alkynylation of Unactivated Aliphatic Tertiary Methylamine with Terminal Alkyne
作者:Xiaoliang Xu、Xiaonian Li
DOI:10.1021/ol802974b
日期:2009.2.19
Mediated by copper/diethyl azodicarboxylate, regioselective alkynylation of unactivated aliphatic tertiary methylamine with terminal alkyne was successfully established. It is not necessary for the tertiary methylamines to be aryl substituted to modulate the properties of amines. The alkynylation reaction described here has the advantage of simple operation, mild reaction conditions, good to excellent yields, and no need to exclude air and moisture.
CuBr2 catalyzed alkynylation of tertiary methylamine with terminal alkyne using aqueous TBHP under mild conditions
A CuBr2 catalyzed alkynylation of tertiary methylamines with terminalalkynes has been developed. Compared with the recent alkenylations, which mostly focused on aromatic methylamines, this transformation shows good reactivity to aliphatic tertiary methylamines. The reaction proceeds under room temperature using aqueous TBHP without the requirement of an inert atmosphere.