Results 1 to 10 of about 1,598,383 (361)

A silylene-stabilized ditin(0) complex and its conversion to methylditin cation and distannavinylidene

open access: yesNature Communications, 2023
Due to their intrinsic high reactivity, isolation of tin(0) complexes remains challenging. Herein, we report the synthesis of a silylene-stabilized ditin(0) complex (2) by reduction of a silylene-supported dibromostannylene (1) with 1 equivalent of ...
Shaozhi Du   +5 more
doaj   +1 more source

Direct allylic acylation via cross-coupling involving cooperative N‑heterocyclic carbene, hydrogen atom transfer, and photoredox catalysis

open access: yesNature Communications, 2023
Herein, we report a mild, operationally simple, multicatalytic method for the synthesis of β,γ-unsaturated ketones via allylic acylation of alkenes. Specifically, the method combines N‑heterocyclic carbene catalysis, hydrogen atom transfer catalysis, and
Xiaochen Wang   +6 more
doaj   +1 more source

Design, Synthesis, and Bioactivities of Novel Tryptophan Derivatives Containing 2,5-Diketopiperazine and Acyl Hydrazine Moieties

open access: yesMolecules, 2022
Based on the scaffolds widely used in drug design, a series of novel tryptophan derivatives containing 2,5-diketopiperazine and acyl hydrazine moieties have been designed, synthesized, characterized, and evaluated for their biological activities.
Lili Li   +6 more
doaj   +1 more source

Facile and general electrochemical deuteration of unactivated alkyl halides

open access: yesNature Communications, 2022
Deuterium-labelled compounds are useful for mechanistic studies and pharmaceutical science, but syntheses are not trivial. Here, the authors report deuteration of unactivated alkyl (pseudo)halides driven by electrochemical force, using deuterium oxide as
Pengfei Li   +6 more
doaj   +1 more source

Promoting Efficacy and Environmental Safety of Pesticide Synergists via Non-Ionic Gemini Surfactants with Short Fluorocarbon Chains

open access: yesMolecules, 2022
Improving the utilization rate of pesticides is key to achieve a reduction and synergism, and adding appropriate surfactant to pesticide preparation is an effective way to improve pesticide utilization.
Ruiguo Wang   +7 more
doaj   +1 more source

Organic Matter in Cometary Environments [PDF]

open access: yesLife, 2021
Comets contain primitive material leftover from the formation of the Solar System, making studies of their composition important for understanding the formation of volatile material in the early Solar System. This includes organic molecules, which, for the purpose of this review, we define as compounds with C–H and/or C–C bonds.
Adam J. McKay, Nathan X. Roth
openaire   +3 more sources

Metal-free electrochemical dihydroxylation of unactivated alkenes

open access: yesNature Communications, 2023
Herein, a metal-free electrochemical dihydroxylation of unactivated alkenes is described. The transformation proceeds smoothly under mild conditions with a broad range of unactivated alkenes, providing valuable and versatile dihydroxylated products in ...
Min Liu   +6 more
doaj   +1 more source

Ketone α-alkylation at the more-hindered site

open access: yesNature Communications, 2023
Control of the regioselectivity of α-alkylation of carbonyl compounds is a longstanding topic of research in organic chemistry. By using stoichiometric bulky strong bases and carefully adjusting the reaction conditions, selective alkylation of ...
Ming-Ming Li   +6 more
doaj   +1 more source

Suppression of alpha-carbon racemization in peptide synthesis based on a thiol-labile amino protecting group

open access: yesNature Communications, 2023
In conventional solid-phase peptide synthesis (SPPS), α-amino groups are protected with alkoxycarbonyl groups (e.g., 9-fluorenylmethoxycarbonyl [Fmoc]).
Yifei Zhou   +7 more
doaj   +1 more source

Design, Synthesis, and Bioactivity Study of Novel Tryptophan Derivatives Containing Azepine and Acylhydrazone Moieties

open access: yesMolecules, 2022
Based on the scaffolds widely used in drug design, a series of novel tryptophan derivatives containing azepine and acylhydrazone moieties have been designed, synthesized, characterized, and evaluated for their biological activities.
Jingjing Zhang   +6 more
doaj   +1 more source

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