Results 121 to 130 of about 194,755 (364)

High Enantioselective Organocatalytic Asymmetric Direct Aldol Reactions of Aldehydes with Long-Chain Aliphatic Ketones

, 2009
Asymmetric organocatalysis have been developed explosively, since the pioneering work on proline-catalyzed asymmetric direct Aldol reaction reported by List, Barbas and coworkers[1].
高强, 李军, 李灿
core  

Single Crystals of Perylene Diimide‐Based Two‐Dimensional Covalent Organic Frameworks

Advanced Materials, EarlyView.
Synthesizing extended crystals of two‐dimensional covalent organic frameworks (2D COFs) has remained a major challenge. Here, we report a high‐temperature double‐modulator strategy that provides access to new perylene diimide (PDI)‐based COFs with crystal sizes of up to 50 µm.
Ling Zhang, Zixuan Chen, Lukas Mühlnickel, Lukas Sporrer, Jakub D. Jasinski, Megha Koottungal, Kevin Synnatschke, Paul‐Felix Jordan, Silvia Paasch, Eike Brunner, Zhehao Huang, Alexey Chernikov, Florian Auras   +12 more
wiley   +1 more source

Transfer hydrogenation of aldehydes on amphiphilic catalyst assembled at the interface of emulsion droplets

, 2008
An amphiphilic polymer-based iridium catalyst assembled at the interface of emulsion droplets shows a remarkable rate acceleration for the transfer hydrogenation of aldehydes in water, which may result from the high surface area of the emulsion droplets ...
Li, Jun, Gao, Jinbo, Zhang, Yanmei, Jia, Guoqing, Li, Can, 李灿, Zhong, Lin, Han, Difei   +7 more
core   +1 more source

One‐Pot Oxidative Esterification and Amidation of Aldehydes [PDF]

, 2008
Kekeli Ekoue‐Kovi, Christian Wolf
openalex   +1 more source

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

Advanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park, Hyeri Jeon, Hyunwoong Park, Ji Min Lee, Yeomyung Yoon, Gyeong Hwan Choi, Sazzadul A. Rahat, Dong Wook Lee, Sohdam Jeong, Jonathan T. Pham, Chae Bin Kim, Sanghyuk Wooh   +11 more
wiley   +1 more source

Acid controlled diastereoselectivity in asymmetric aldol reaction of cycloketones with aldehydes using enamine-based organocatalysts

, 2011
Acid controlled diastereoselectivity in asymmetric aldol reaction of cycloketones with aldehydes using enamine-based organocatalystsThe example of syn-aldol reaction of cyclohexanone to aldehyde was demonstrated based on chiral diamine organocatalysts ...
Liu, Yan, 刘, 杨启华, Gao, Qiang, Gao, Jinsuo, Yang, Qihua, Bai, Shiyang   +6 more
core   +1 more source

Über die Bindung α,β-ungesättigter Aldehyde in Zellen und Geweben [PDF]

, 1967
W Burkl, Ilona Krämer, E. Schauenstein
openalex   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Unexpected ring-opening reactions of aziridines with aldehydes catalyzed by nucleophilic carbenes under aerobic conditions

, 2006
The chemoselective ring opening of N-tosyl aziridines with aldehydes catalyzed by an N-heterocyclic carbene was investigated under aerobic conditions. Unexpected carboxylates of 1,2-amino alcohols from the corresponding aldehydes, rather than the acyl ...
Yue, L, Liu, YK, Li, BJ, Liu, YK, Sichuan Univ, W China Sch Pharm, Educ Minist, Key LDrug Targeting, Chengdu 610041, Peoples R China., Wu, Y, Ding, LS, Li, R, Chen, YC   +7 more
core  

Trichloromethanesulfonyl Chloride: A Chlorinating Reagent for Aldehydes

, 2016
Trichloromethanesulfonyl chloride (CCl3SO2Cl), a commercially available reagent, has been found to perform efficiently in the α-chlorination of aldehydes, including its catalytic asymmetric version, under very mild reaction conditions. Under our reaction
Lidong Cao (1393009), Renaud, Philippe, Philippe Renaud (201179), Cao, Lidong, Jimeno, Ciril, Ciril Jimeno (1393006)   +5 more
core   +1 more source