Synthesis of tertiary arylamines: Lewis acid-catalyzed direct reductive N-alkylation of secondary amines with ketones through an alternative pathway
作者:Onkar S. Nayal、Maheshwar S. Thakur、Vinod Bhatt、Manoranjan Kumar、Neeraj Kumar、Bikram Singh、Upendra Sharma
DOI:10.1039/c6cc04381j
日期:——
We report herein a highly efficient, tin(II)/PMHS catalyzed reductive N-alkylation of arylamines with ketones affording tertiary arylamines. Very wide substrate scope was observed for current catalytic method as all six...
One‐Pot Transfer Hydrogenation Reductive Amination of Aldehydes and Ketones by Iridium Complexes “on Water”
作者:Lu Ouyang、Yanping Xia、Jianhua Liao、Renshi Luo
DOI:10.1002/ejoc.202001097
日期:2020.10.31
An efficient and practical one-pot transfer hydrogenation reductive amination of aldehydes and ketones with amines has been developed by using iridium complexes as catalysts and formic acid as hydrogen source in aqueous, providing an environmentalfriendly methodology for the construction of a wide range of functionalized amine compounds in excellent yields (80%~95%) This effective methodology can
BF<sub>3</sub>·Et<sub>2</sub>O as a metal-free catalyst for direct reductive amination of aldehydes with amines using formic acid as a reductant
作者:Zhenli Luo、Yixiao Pan、Zhen Yao、Ji Yang、Xin Zhang、Xintong Liu、Lijin Xu、Qing-Hua Fan
DOI:10.1039/d1gc01468d
日期:——
direct reductive amination of aldehydes with amines using formic acid as a reductant under the catalysis of inexpensive BF3·Et2O has been developed. A wide range of primary and secondary amines and diversely substitutedaldehydes are compatible with this transformation, allowing facile access to various secondary and tertiary amines in high yields with wide functional group tolerance. Moreover, the
2-Aminoquinazolin-4(<i>3H</i>)-one as an Organocatalyst for the Synthesis of Tertiary Amines
作者:Maheshwar S. Thakur、Onkar S. Nayal、Rahul Upadhyay、Neeraj Kumar、Sushil K. Maurya
DOI:10.1021/acs.orglett.8b00127
日期:2018.3.2
The potential of 2-aminoquinazolin-4(3H)-one as an organocatalyst for the activation of aldehydes via noncovalent interaction for the synthesis of tertiary amines using formic acid as a reducing agent is reported for the first time. The developed protocol demonstrated a dilated substrate scope for aromatic and aliphatic amines with aromatic and aliphatic aldehydes. Furthermore, the current method was
Methylation of aromatic amines and imines using formic acid over a heterogeneous Pt/C catalyst
作者:Lei Zhu、Lian-Sheng Wang、Bojie Li、Wei Li、Boqiao Fu
DOI:10.1039/c6cy00674d
日期:——
We describe here a commercially available Pt/C catalyst capable of catalyzing the methylation of anilines and aromatic imines with formic acid in the presence of a hydrosilane reductant. Both primary aniline and secondary aniline can be methylated. The advantage of this newly described method includes operational simplicity, high TON, ready availability of the catalyst, and also good functional group