Science - USA (2022-04-15)
of the distance between dendritic locations, with only minimal interactions between the two hemi- trees [fig. S14D; see also Ker ...
REPORTS ◥ ORGANIC CHEMISTRY Allylic CÐH amination cross-coupling furnishes tertiary amines by electrophilic metal catalysis Sira ...
SCIENCEscience.org 15 APRIL 2022¥VOL 376 ISSUE 6590 277 Fig. 1. Reaction design and development.(A) Merging the benefits of clas ...
278 15 APRIL 2022¥VOL 376 ISSUE 6590 science.orgSCIENCE Fig. 2. AACC reaction scope.(A) Aliphatic cyclic and acyclic amine scope ...
amounts of free amine 1 under the standard conditions afforded no observed product, whereas substoichiometric amounts of 1 (0.1 ...
280 15 APRIL 2022¥VOL 376 ISSUE 6590 science.orgSCIENCE Fig. 4. Mechanistic studies and proposed mechanism.(A) Reaction profile ...
underscores the high reactivity and selectiv- ity achieved with metal-mediated allylic C–H aminations. Cyclic amines account for ...
were stable under the mildly acidic conditions of AACC catalysis to furnish 51 and 52 in pre- parative yields. Allylbenzene olef ...
T. Knecht, S. Mondal, J.-H. Ye, M. Das, F. Glorius,Angew. Chem. Int. Ed. 58 , 7117–7121 (2019). E. T. Hennessy, R. Y. Liu, D. A ...
284 15 APRIL 2022¥VOL 376 ISSUE 6590 science.orgSCIENCE Fig. 1. Seismotectonic context of the 2021 Nippes earthquake. (A) Major ...
It was also the locus of the devastatingMw7.0 earthquake of 12 January 2010. The epicen- tral region of the 2021 Nippes earthqua ...
P-wave and S-wave arrival picks, source- specific station terms, and waveform simi- larity ( 24 ), with estimated error in absol ...
and with the finite fault seismic model (Fig. 3B). This consistency highlights the value of RS data to rapidly assess the main c ...
CATALYSIS Ambient-pressure synthesis of ethylene glycol catalyzed by C 60 -buffered Cu/SiO 2 Jianwei Zheng^1 †, Lele Huang^1 †, ...
SCIENCEscience.org 15 APRIL 2022¥VOL 376 ISSUE 6590 289 Fig. 1. Catalytical performance of Cu/SiO 2 and C 60 -Cu/SiO 2 (C 60 ,10 ...
5 (nm). N 2 O chemisorption in connection with H 2 pulse reduction was adopted to measure the exposed Cu surface area and disper ...
(table S2). Indeed, C 60 is too big to intercalate into Cu lattice sites but appears to adsorb on the surface of Cu NPs through ...
transfers between C 60 and Cu^0 ,C 60 −and Cu2+. As shown in Fig. 3C, in the C 60 -Cu system the Bader charge of Cu (−0.50) is m ...
AEROSOL OPTICS Amplification of light within aerosol particles accelerates in-particle photochemistry Pablo Corral Arroyo^1 , Gr ...
overall acceleration of the reaction and the spatial inhomogeneity ofathat was observed experimentally. Based on this result, we ...
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