Results 21 to 30 of about 449,490 (251)

Radical azidation as a means of constructing C(sp3)-N3 bonds

open access: yesGreen Synthesis and Catalysis, 2020
The azido group is found in large numbers of natural products, drugs, biochemicals and materials and to date, many elegant and useful methods for the synthesis of organic azides and their transformations have been documented. In this review, we provide a
Liang Ge   +3 more
doaj   +1 more source

Radical Decarboxylative Carbon–Nitrogen Bond Formation

open access: yesMolecules, 2023
The carbon–nitrogen bond is one of the most prevalent chemical bonds in natural and artificial molecules, as many naturally existing organic molecules, pharmaceuticals, agrochemicals, and functional materials contain at least one nitrogen atom.
Xiangting Li   +4 more
doaj   +1 more source

Ethylene signalling receptors and transcription factors over the grape berry development: gene expression profiling [PDF]

open access: yes, 2010
The ethylene signalling pathway has never been fully described in grapes. Regarded as a non-climacteric fruit, grape berry seems to ripen independently to ethylene, however 1-methylcyclopropene (1-MCP), a specific inhibitor of ethylene receptors has been
Chervin, Christian   +4 more
core   +1 more source

Easy access to medium-sized lactones through metal carbene migratory insertion enabled 1,4-palladium shift

open access: yesNature Communications, 2020
Transannular construction of medium-sized lactones is entropically unfavoured. Herein, the authors describe a strategy for valuable medium-sized lactone synthesis from available benzaldehydes by selective C-H bond functionalization via palladium carbene ...
Yinghua Yu   +5 more
doaj   +1 more source

Revealing the Iron-Catalyzed β-Methyl Scission of tert-Butoxyl Radicals via the Mechanistic Studies of Carboazidation of Alkenes

open access: yesMolecules, 2020
We describe here a mechanistic study of the iron-catalyzed carboazidation of alkenes involving an intriguing metal-assisted β-methyl scission process.
Mong-Feng Chiou   +4 more
doaj   +1 more source

Asymmetric radical carboesterification of dienes

open access: yesNature Communications, 2021
Stereocontrol of C–O bond formation from a carbon-based radical is very difficult due to the rapid inversion of the carbon radical. Here the authors present a method to form chiral esters from conjugated dienes with copper and chiral PyBox ligands ...
Xiaotao Zhu   +6 more
doaj   +1 more source

Climacteric fruit ripening: Ethylene-dependent and independent regulation of ripening pathways in melon fruit [PDF]

open access: yes, 2008
Cantaloupe melons have a typical climacteric behaviour with ethylene playing a major role in the regulation of the ripening process and affecting the ripening rate.
Latché, Alain   +5 more
core   +1 more source

A conserved phosphorylation site regulates the transcriptional function of ETHYLENE-INSENSITIVE3-like1 in tomato [PDF]

open access: yes, 2011
ETHYLENE-INSENSITIVE3/ETHYLENE-INSENSITIVE3-like (EIN3/EIL) transcription factors are important downstream components of the ethylene transduction pathway known to regulate the transcription of early ethylene-responsive genes in plants.
Z. Li   +11 more
core   +1 more source

Regeneration and Reuse of Activated Carbon for Dye Adsorption under Ambient Conditions Using Dilute Chemical Solutions [PDF]

open access: yesEPJ Web of Conferences
This study investigated the regeneration and reuse of methylene blue-loaded activated carbon using dilute 0.1 M hydrochloric acid (HCl) and sodium hydroxide (NaOH) under ambient conditions. Batch adsorption experiments were conducted at initial methylene
Rosli Muhammad Alif Basyar   +2 more
doaj   +1 more source

Ethylene and 1-methylcyclopropene differentially regulate gene expression during onion sprout suppression. [PDF]

open access: yes, 2011
Onion (Allium cepa) is regarded as a nonclimacteric vegetable. In onions, however, ethylene can suppress sprouting while the ethylene-binding inhibitor 1- methylcyclopropene (1-MCP) can also suppress sprout growth; yet, it is unknown how ethylene and ...
Thompson, Andrew J.   +11 more
core   +1 more source

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