A breath of fresh air: The title reaction has been developed for the coupling of amines with nitroalkanes and different unmodified ketones usingair as the sole oxidant under mild reaction conditions. The safe, convenient, and environmentally benign process, as well as the low catalyst loading, short reaction time, and good yields make this protocol very practical (see scheme).
Highly efficient oxidative carbon–carbon coupling with SBA-15-support iron terpyridine catalyst
作者:Peng Liu、Cong-Ying Zhou、Song Xiang、Chi-Ming Che
DOI:10.1039/c001209b
日期:——
SBA-15-Fe(terpy)2+ complex efficiently catalyzed oxidative CâC cross-coupling reactions of tertiary amines with carbon nucleophiles in high product yields. The supported terpyridine ligand can be recycled by filtration.
Efficient aerobic cross-dehydrogenative coupling of tertiary amines over NiGa layered double oxide
作者:Zhonghua Sun、Zhenzhen Xia、Anwei Wang、Hui Wang、Zhong Zhang、Weiyou Zhou、Junfeng Qian、Mingyang He
DOI:10.1016/j.tetlet.2020.152254
日期:2020.8
An efficient and convenient heterogeneous catalytic system has been developed for the aerobic cross-dehydrogenative coupling over NiGa layered double oxide (Ni3Ga-LDO) without any additives. The results indicated that the catalytic system could tolerate various tetrahydroquinoline derivatives and nucleophiles using molecular oxygen as a sustainable oxidant. The catalyst could be recycled four times
Difunctionalization of the C–N Bond through <i>tert</i>-Butylnitrite-Initiated C–N Cleavage of 1,2,3,4-Tetrahydroisoquinolines and <i>N</i>,<i>N</i>′-Diarylimidazolidines under Transition-Metal-Free Conditions
Difunctionalization of the saturated C-Nbond of 1,2,3,4-tetrahydroisoquinolines and N,N'-diarylimidazolidines was achieved using TBN as the metal-free initiator, providing a series N-nitrosoaminoaldehydes in high yields. Mechanistic study shows that the TBN-derived tBuO radical initiated the sp3 C-H bond activation, and the C-Nbondcleavage was mediated by an iminium intermediate. This reaction provided
BLEACHING AGENT COMPRISING CATIONIC 3,4-DIHYDROISOQUINOLINE DERIVATIVES, SPECIAL ALKANOL AMINES AND HYDROGEN PEROXIDE
申请人:Gross Wibke
公开号:US20110056508A1
公开(公告)日:2011-03-10
Agent for bleaching keratinic fibers containing hydrogen peroxide, at least one cationic 3,4-dihydroisoquinoline derivate of general structure (I)—
and at least one alkanol amine of the following general structure (II)—
where n is a natural number from 2 to 6. The invention further relates to use of the agent for bleaching hair and to a corresponding method.