Results 241 to 250 of about 13,874,644 (302)

Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical

open access: yesAngewandte Chemie, EarlyView.
We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda   +8 more
wiley   +1 more source

Gold Single‐Atom Catalysts Enable Selective Shuttle Hydrochlorination of Alkynes

open access: yesAngewandte Chemie International Edition, EarlyView.
Gold single‐atom catalysts on activated carbon enable heterogeneous shuttle hydrochlorination of terminal alkynes to vinyl chlorides with high chemo‐ and stereo‐selectivity thanks to cooperation between Au(I) sites and the support. The catalytic system combines broad substrate compatibility, simplified separation, and recoverability, paving the way for
Marc‐Eduard Usteri   +8 more
wiley   +1 more source

Maternal supplementation of vitamin B<sub>12</sub> in predominantly vegetarian pregnant women improves their vitamin B<sub>12</sub> status and the neurodevelopment of their infants: the MATCOBIND multicentric double-blind randomised control trial. [PDF]

open access: yesBMJ Paediatr Open
Nagpal J   +15 more
europepmc   +1 more source

A vitamin B<sub>3</sub>-driven root bacterial metabolite primes systemic immunity in <i>Arabidopsis</i>. [PDF]

open access: yesSci Adv
Wang X   +14 more
europepmc   +1 more source

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