Results 141 to 150 of about 1,126 (270)

Volcanic forcing of global climate cooling at the Younger Dryas onset preserved in North American sediments. [PDF]

Sci Adv
Nana Yobo L, Brandon AD, O'Brien S, Halligan JJ, Waters MR.   +4 more
europepmc   +1 more source

The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents

Chemistry – A European Journal, EarlyView.
Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer, Paco Visser, Ben L. Feringa   +2 more
wiley   +1 more source

Recent progress and future prospects of the early solar system chronology. [PDF]

Natl Sci Rev
Amelin Y, Yin QZ.
europepmc   +1 more source

Rapid coupling between solid earth and ice volume during the Quaternary. [PDF]

Sci Rep, 2021
Kuwahara Y, Yasukawa K, Fujinaga K, Nozaki T, Ohta J, Sato H, Kimura JI, Nakamura K, Yokoyama Y, Kato Y.   +9 more
europepmc   +1 more source

Breaking the Mold: Electrophilic Hydrophosphanation Emerges

Chemistry – A European Journal, EarlyView.
Electrophilic hydride attack on the olefin, instead of the classical nucleophilic addition by a phosphanido ligand, is unveiled in rhodium‐catalyzed olefin hydrophosphanation. This hydride‐driven pathway operates for both activated and inactivated olefins, with transition states characterized by elongated Rh─H bonds and nascent C─H bond formation ...
Víctor Varela‐Izquierdo, Janeth Navarro, Judit Cano‐Asensio, José A. López, Cristina Tejel   +4 more
wiley   +1 more source

Paleozoic carbonatites controlled rare-earth-elements mineralization at Bayan Obo. [PDF]

Sci Adv
Li Y, Wu LG, Yu Y, Yang L, Selby D, Li XH.   +5 more
europepmc   +1 more source

Visible‐Light Driven Acetylene Semi‐Hydrogenation to Ethylene With a Copper Photosensitizer and a Cobaloxime Catalyst

Chemistry – A European Journal, EarlyView.
A fully noble‐metal‐free photocatalytic system that couples cobaloxime catalysis with Cu photosensitizer for HAT‐driven acetylene‐to‐ethylene conversion is reported. ABSTRACT The purification of ethylene streams from acetylene impurities remains a key industrial challenge, for which light‐powered strategies are emerging as sustainable alternatives to ...
Anna Fortunato, Sharon Silloni, Brando Adranno, Marianna Barbieri, Luka Đorđević, Francesca Arcudi   +5 more
wiley   +1 more source

Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot (Lota lota)

Integrated Environmental Assessment and Management, EarlyView., 2023
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves, Noëlie Molbert, David M. Janz, Lauren D. Hayhurst, Jessica E. Brandt, Lauren Timlick, Vince P. Palace   +6 more
wiley   +1 more source

Multidisciplinary evidence for synchroneity between Ontong Java Nui volcanism and early Aptian oceanic anoxic event 1a. [PDF]

Sci Adv
Matsumoto H, Shirai K, Ishikawa A, Ohkouchi N, Ogawa NO, Tejada MLG, Ando A, Kuroda J, Suzuki K.   +8 more
europepmc   +1 more source

Progressive crushing ⁴⁰Ar/³⁹Ar dating of a gold-bearing quartz vein from the Liaotun Carlin-type gold deposit, Guangxi, southern China. [PDF]

Sci Rep, 2022
Hu R, Pang B, Bai X, Brouwer FM, Bai L, Liu X, Li Y, Xu J, Qiu H.   +8 more
europepmc   +1 more source