Application of Sequential Cu(I)/Pd(0)-Catalysis to Solution-Phase Parallel Synthesis of Combinatorial Libraries of Dihydroindeno[1,2-<i>c</i>]isoquinolines
作者:Sarvesh Kumar、Thomas O. Painter、Benoy K. Pal、Benjamin Neuenswander、Helena C. Malinakova
DOI:10.1021/co200027c
日期:2011.9.12
methodology is compatible with a wide-range of aliphatic linear, branched, and ester functionalized N-substituents. Unexpectedly, the formation of regioisomers featuring a 1,2,3-contiguous substitution pattern in the aromatic ring of the indene core was observed. Three distinct combinatorial libraries with a total of 111 of members were synthesized, and 80 highly substituted dihydroindenoisoquinolines structurally
Development of the First Menthane-Based Chiral Bis(π-allylpalladium) Catalysis: Asymmetric Allylation of Imines
作者:Rodney A. Fernandes、Dipali A. Chaudhari
DOI:10.1002/ejoc.201101588
日期:2012.4
A new ethylidene menthane-basedchiralπ-allylpalladium complex catalyzes the asymmetricallylation of various imines with allyltributylstannane and 1 equiv. of water to give chiral homoallylamines in good yields and enantioselectivities. The reaction was carried out essentially under neutral conditions and displayed a good transfer of chiral information from the menthane skeleton through the formation
Cp*Ir complex bearing a flexible bridging and functional 2,2′-methylenebibenzimidazole ligand as an auto-tandem catalyst for the synthesis of N-methyl tertiary amines from imines via transfer hydrogenation/N-methylation with methanol
作者:Xiaozhong Chen、Yao Ai、Peng Liu、Chenchen Yang、Jiazhi Yang、Feng Li
DOI:10.1016/j.jcat.2021.08.037
日期:2021.10
A Cp*Ir complex bearing a flexible bridging and functional 2,2′-methylenebibenzimidazole ligand was designed, synthesized, and found to be a general and efficient auto-tandem catalyst for the synthesis of N-methyl tertiary amines from imines via transfer hydrogenation/N-methylation with methanol as both hydrogen source and methylating reagent. In the presence of [Cp*Ir(2,2′-CH2BiBzImH2)Cl][Cl], a range
Stereoselective synthesis of trans β-lactams via palladium/N-heterocyclic carbene-catalyzed carbonylative [2+2] cycloaddition
作者:Pan Xie、Bo Qian、Hanmin Huang、Chungu Xia
DOI:10.1016/j.tetlet.2012.01.073
日期:2012.3
The carbonylative [2+2] cycloaddition of benzyl chlorides and allyl derivatives with imines and CO for synthesis of β-lactam is effectively catalyzed by palladium/N-heterocyclic carbene complex. The desired β-lactam could be obtained in good to excellent yields (61–96%) with excellent regioselectivities (trans/cis > 95:5) and chiral lactams could be obtained with moderate diastereoselectivities. The
Phosphatase inhibitors—III. Benzylaminophosphonic acids as potent inhibitors of human prostatic acid phosphatase
作者:Scott A. Beers、Charles F. Schwender、Deborah A. Loughney、Elizabeth Malloy、Keith Demarest、Jerold Jordan
DOI:10.1016/0968-0896(96)00186-1
日期:1996.10
phenylphosphonic acid, and a rigid conformer produced by an internal salt bridge between the phosphonate and the alpha-amino group. Replacement of the phosphonic acid moiety with a phosphinic or carboxylic acid as well as deletion of the benzyl substitution of the alpha-amino group led to great reductions in potency.