Results 231 to 240 of about 403,555 (400)

Direct separation of optical isomers of propranolol by HPLC method.

, 1988
Satoru Kanno
openalex   +2 more sources

Geometric Nonuniformity Localizes Valence Orbitals in Gold Clusters: Case Study on [Au23(SC6H11)16]–

Angewandte Chemie, EarlyView.
The electronic structure of [Au23(SC6H11)16]–, a monolayer‐protected gold cluster with a nonuniform Au13 core, was investigated. Anion photoelectron spectroscopy and density functional theory calculations revealed that the highest occupied molecular orbital (HOMO) and HOMO‐1 are localized on the two triangular Au3 units at the ends of the Au13 core ...
Yosuke Asami, Shun Ito, Kiichirou Koyasu, Tatsuya Tsukuda   +3 more
wiley   +1 more source

Halogenated azobenzene acrylates: from efficient solution photoswitching to stable solid-state photochromic materials. [PDF]

Beilstein J Org Chem
Vachtlová M, Fecková M, Zima V, Podlesný J, Klikar M, Pytela O, Pařík P, Opršal J, Juhaňáková E, Chrtová V, Bureš F.   +10 more
europepmc   +1 more source

Polymerization of Propenyl Chloride Isomers

, 1964
Akihiko Shimizu, Takayuki Otsu
openalex   +2 more sources

Asymmetric Iron‐Catalyzed Vicinal C(sp3)─H Diamination of Carboxylic Acids

Angewandte Chemie, EarlyView.
An iron‐catalyzed vicinal α,β‐C(sp3)─H diamination of readily available carboxylic acids furnishes chiral α,β‐diamino acids in a single pot with high regio‐, diastereo‐, and enantioselectivity (up to >20:1 dr and >99% ee). ABSTRACT The direct construction of chiral 1,2‐diamines through the stereoselective functionalization of two vicinal C(sp3)─H bonds
Bing Zhou, Yuan Zheng, Xiulan Xie, Marcel Hemming, Sergei I. Ivlev, Eric Meggers   +5 more
wiley   +1 more source

Impact of Counterions on the Electronic Structure and Optical Properties of Water-Soluble Au₂₅ Clusters. [PDF]

J Phys Chem A
Verma M, Malola S, Häkkinen H.
europepmc   +1 more source

Stereoselective Synthesis of the Indole Alkaloids Nitrarine, Nitramidine, and Isomers. A Biomimetic Approach [PDF]

, 1994
Martin J. Wanner, Gerrit‐Jan Koomen
openalex   +1 more source

Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries

Angewandte Chemie, EarlyView.
This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho, Al Vicente Riano D. Lisboa, Juntao Sun, Taeho Kang, Keary M. Engle   +4 more
wiley   +1 more source

Engineering nitrogen-doped carbon quantum dots: investigating the role of dopant isomer configuration. [PDF]

RSC Adv
Rasouli M, Rezvani-Moghaddam A, Liu Y, Moaref R, Zhang J, Sundararaj U.   +5 more
europepmc   +1 more source

In situ Raman and FTIR spectroscopic study on the formation of the isomers MIL-68(Al) and MIL-53(Al)

, 2020
Heidemarie Embrechts, Martin Kriesten, Matthias Ermer, Wolfgang Peukert, Martin Hartmann, Monica Distaso   +5 more
openalex   +2 more sources