Iridium-PPh3 Catalysts for Conversion of Amides to Enamines
Iridium-PPh3 Catalysts for Conversion of Amides to Enamines
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用于将酰胺转化为烯胺的铱-PPh3 催化剂
DOI:
10.1021/acs.organomet.8b00835
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发表时间:
2019
期刊:
影响因子:
2.8
通讯作者:
Nagashima Hideo
中科院分区:
文献类型:
--
作者:
Une Yuta;Tahara Atsushi;Miyamoto Yasumitsu;Sunada Yusuke;Nagashima Hideo
Studies on the deactivation mechanism of the reaction ofN,N-dialkylamides with TMDS catalyzed by Vaska’s complex, IrCl(CO)(PPh3)2(1a), triggered the discovery of highly active Ir-PPh3catalysts: photochemically activated1aand thermally activated IrCl(PPh3)3(8). Both catalysts showed excellent activity toward the selective conversion of a variety ofN,N-dialkyl-,N-alkyl-N-aryl-, andN,N-diarylamides to the corresponding enamines with low catalyst loadings. The 14-electron species “ClIr(PPh3)2”, which is stabilized by solvents or reactants in the actual catalytic reactions, could be involved in the catalysis, which produces “HIr(PPh3)2” and “SiIr(PPh3)2” (Si= Me2HSiOMe2Si−) species in the catalytic cycle. An in situ generation method for the “ClIrL2” species was established by simply mixing [IrCl(η4-COD)]2with PPh3or other phosphorus ligands, which realized the facile large-scale syntheses of enamines.
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影响因子:
4.9
作者:
Hironori Tsutsumi;Y. Sunada;H. Nagashima
通讯作者:
Hironori Tsutsumi;Y. Sunada;H. Nagashima
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
M. L. Loza;J. Faller;R. Crabtree
通讯作者:
R. Crabtree
影响因子:
2.8
作者:
Y. Sunada;Y. Fujimura;H. Nagashima
通讯作者:
Y. Sunada;Y. Fujimura;H. Nagashima
影响因子:
2.8
作者:
NAGASHIMA, H;TATEBE, K;ITOH, K
通讯作者:
ITOH, K
影响因子:
1.8
作者:
Hanada, Shiori;Motoyama, Yukihiro;Nagashima, Hideo
通讯作者:
Nagashima, Hideo