Results 71 to 80 of about 47,675 (279)

Siloxy alkynes in annulation reactions

, 2014
Siloxy alkynes are a family of versatile species in organic synthesis. This account reviews the annulation reactions of siloxy alkynes for the synthesis of a variety of carbo- and heterocyclic products.
Sun, Jianwei, Zhao, Wanxiang, Qian, Hui
core   +1 more source

SynNotch Receptors for Visualizing Immunoreceptor Force Transmission and Downstream Signaling In Vivo

Advanced Science, EarlyView.
A mechanically activated SynNotch reporter platform enables detection of force transmission through receptors as they mediate immune cell interactions. Targeting CD40 on B cells and TCR on T cells records force‐induced reporter activation across 2D coculture, 3D organoid, and implanted in mice, which also reveal force‐amplification of immune receptor ...
Menglan Li, Jintian Lyu, Kaitao Li, Ameya Dravid, Deepali Balasubramani, Amir H. K. Ashkezari, Hyun‐Kyu Choi, Gabriel A. Kwong, Ankur Singh, Cheng Zhu   +9 more
wiley   +1 more source

E‐Selective Radical Difunctionalization of Unactivated Alkynes: Preparation of Functionalized Allyl Alcohols from Aliphatic Alkynes

Advanced Science
Radical difunctionalization of aliphatic alkynes provides direct access to valuable multi‐substituted alkenes, but achieving a high level of chemo‐ and stereo‐control remains a formidable challenge.
Jie Wang, Xinxin Wu, Zhu Cao, Xu Zhang, Xinxin Wang, Jie Li, Chen Zhu   +6 more
doaj   +1 more source

Rhodium/Ming-Phos-catalyzed asymmetric annulation reaction of silacyclobutanes with terminal alkynes

Green Synthesis and Catalysis
Asymmetric ring-expansion reactions of silacyclobutanes (SCBs) with alkynes have evolved as one of the powerful protocols for the construction of silicon-stereogenic compounds.
Yue Sun, Kaida Zhou, Chun Ma, Zhiming Li, Junliang Zhang   +4 more
doaj   +1 more source

syn-Selective alkylarylation of terminal alkynes via the combination of photoredox and nickel catalysis

Nature Communications, 2018
Converting alkynes into alkenes with high stereoselectivity via two consecutive C-C bond forming steps is a desirable process, yet very challenging. Here, the authors describe a dual photoredox-nickel catalytic system for the regio- and syn-selective ...
Lei Guo, Fan Song, Shengqing Zhu, Huan Li, Lingling Chu   +4 more
doaj   +1 more source

Blue Light Induced Difluoroalkylation of Alkynes and Alkenes

, 2019
The difluoroalkylation of alkynes and alkenes by direct photoexcitation of ethyl difluoroiodoacetate is described. Under catalyst- and oxidant-free conditions, iododifluoro­alkylation and hydrodifluoro­alkylation products were generated from alkynes, and
Kangkui Li, Jingchao Chen (1533052), Yang Gao, Baomin Fan, Keyang Zhang, Jingchao Chen, Kangkui Li (8071331), Xuexin Zhang, Xuexin Zhang (5859530), Chunhui Yang, Chunhui Yang (293871), Keyang Zhang (8071334), Yongyun Zhou (1533058), Baomin Fan (1490236), Yongyun Zhou, Yang Gao (18005)   +15 more
core   +1 more source

‐Alkynes and Further Functionalizations.

, 2023
International audienceHerein is described a fully regio-and stereoselective hydroelementation reaction of SF5-alkynes with N, O and Snucleophiles and further functionalization of the corresponding Z-(hetero)vinyl-SF5 intermediates, a suitable platform to
Blanchard, Nicolas, Lucas Popek, Vincent Debrauwer, Karinne Miqueu, Miqueu, Karinne, Debrauwer, Vincent, Vincent Bizet, Jorge Juan Cabrera‐Trujillo, Nicolas Blanchard, Bizet, Vincent, Popek, Lucas, Cabrera-Trujillo, Jorge   +11 more
core   +1 more source

Magnetic Water Cleaning of Estrogens via Tight yet Dynamic Binding to Nanoparticles

Advanced Science, EarlyView.
Micropollution is one of the big challenges humanity faces with estrogen hormones being emerging pollutants of concern. Here, a supramolecular design strategy is presented that generates a simple nano‐adsorbent material to magnetically remove low‐concentrated estrogens from water.
Lukas Müller, Philip Maier, Dustin Vivod, Wenke Müller, Nikolaj Lopatik, Theresa Maria Schichtl, Julia Fröhlich, Irene Kraus, Marten Huck, Wieland Corts, Clodomiro Cafolla, Lukas Ruhm, Henrik Gaß, Johannes Voß, Jiwon Byun, Linda Rockmann, Guido Grundmeier, Kislon Voïtchovsky, Hans‐Georg Steinrück, Erdmann Spiecker, Sevim Dalabasmaz, Monika Pischetsrieder, Eike Brunner, Ralf Schweins, Dirk Zahn, Marcus Halik   +25 more
wiley   +1 more source

Cobalt-Catalyzed gem-Cross-Dimerization of Terminal Alkynes

, 2020
Transition-metal-catalyzed dimerization of two different terminal alkynes provides an atom-economic synthesis of valuable conjugated 1,3-enynes. Despite many catalyst systems developed, the state-of-the-art solutions are still limited to special alkynes.
Changkun Li, Jia-Feng Chen, Jia-Feng Chen (757297), Changkun Li (1783816)   +3 more
core   +3 more sources

Cobalt-catalyzed hydrothiolation of alkynes for the diverse synthesis of branched alkenyl sulfides

Nature Communications
Alkenyl sulfides have gained increasing prominence in medicinal chemistry and materials. Hydrothiolation of alkynes for the diverse synthesis of alkenyl sulfides is an appealing method.
Jiale Ying, Yan Tan, Zhan Lu
doaj   +1 more source