Results 11 to 20 of about 214,608 (288)

Imidazolium Chloride: An Efficient Catalyst for Transamidation of Primary Amines

open access: yesMolecules, 2018
A highly efficient and convenient protocol of imidazolium chloride (30 mol %) catalyzed amidation of amines with moderate to excellent yields was reported. The protocol shows broad substrate scope for aromatic, aliphatic, and heterocyclic primary amines.
Qingqiang Tian   +7 more
doaj   +2 more sources

Assessment of the human exposure to heterocyclic amines [PDF]

open access: yesCarcinogenesis, 1997
Heterocyclic amines are possible human carcinogens and fried meat is an important source of exposure in the Western diet. To study the effect of heterocyclic amines in humans, accurate assessment of individual food consumption is essential. Parameters influencing the intake include the amount and type of meat ingested, frequency of consumption, cooking
K, Augustsson   +3 more
openaire   +3 more sources

Autoxidation of Heterocyclic Aminals [PDF]

open access: yesACS Omega, 2017
Abstract The autoxidation reactions of 2-acyl-2,3-dihydroquinazolin-4(1H)-ones 4a and 5a and 2,2′-bis(dihydroquinazolinone) 6a are described. These reactions generate aminyl radicals that undergo β-C–C cleavage, and subsequent reactions of the resulting C-based radicals with O2 lead to diverse products with good selectivity, depending
Feng Zhai, Richard F. Jordan
openaire   +3 more sources

Exposure to heterocyclic amines. [PDF]

open access: yesEnvironmental Health Perspectives, 1993
Many mutagenic heterocyclic amines (HAs) have been isolated from cooked foods and pyrolysates of amino acids and proteins, and the carcinogenicity of 10 of these HAs in rodents and of 1 in monkeys has been reported. Quantification of these carcinogenic HAs in various kinds of cooked foods indicated that the level of 2-amino-1-methyl-6-phenylimidazo[4,5-
K, Wakabayashi   +8 more
openaire   +2 more sources

Novel method for the synthesis of Sulfonamide Urea’s from p-toluene sulfonyl isocyanate using Amberlite IRA-400 Cl resin: Application towards the synthesis of Gliclazide

open access: yesResults in Chemistry, 2021
Novel and facile method for the synthesis of sulfonyl urea’s from p-toluene sulfonyl isocyanates with different amines using Amberlite IRA-400 Cl resin in NMP was reported.
Ravi Kumar Sadineni   +5 more
doaj   +1 more source

Molecularly Imprinted Polymer Nanospheres with Hydrophilic Shells for Efficient Molecular Recognition of Heterocyclic Aromatic Amines in Aqueous Solution

open access: yesMolecules, 2023
Heterocyclic aromatic amine molecularly imprinted polymer nanospheres with surface-bound dithioester groups (haa-MIP) were firstly synthesized via reversible addition-fragmentation chain transfer (RAFT) precipitation polymerization.
Peijian Sun   +8 more
doaj   +1 more source

Phthaloylation of amines, hydrazines, and hydrazides by N-substituted phthalimides using recyclable sulfated polyborate

open access: yesResults in Chemistry, 2022
An efficient, fast, and environmentally gentle protocol for phthaloylation of amines, hydrazines and hydrazides via transamidation is described. The current research focuses on the phthaloylation of alicyclic, aliphatic, aromatic, heterocyclic amines ...
Prerna Ganwir   +2 more
doaj   +1 more source

Dietary Maillard reaction products: implications for human health and disease [PDF]

open access: yes, 2009
When foods are heat processed, the sugars and lipids react with the proteins they contain via the Maillard and related reactions to form a wide range of products.
J. M. AMES, Ames, Jenny
core   +1 more source

Risk assessment of chemical substances of safety concern generated in processed meats

open access: yesFood Science and Human Wellness, 2019
This manuscript is reviewing the presence of substances of safety concern that may be generated in different types of meat products. Such substances include N-nitrosamines that can be generated under certain conditions when using nitrite as preservative,
Mónica Flores   +3 more
doaj   +1 more source

The Effect of Chitosan and Cooking Methods on Heterocyclic Aromatic Amines Formation of Beluga Fillet [PDF]

open access: yesPizhūhish va Nuāvarī dar ̒Ulūm va Sanāyi̒-i Ghaz̠āyī, 2020
The purpose of this study was to use the effectiveness of different chitosan's and cooking methods on the formation of heterocyclic aromatic amines in fish fillet of Beluga (Huso huso). For this purpose, the natural preservative effect of 1% acid-soluble
Hojat Mirsadeghi   +3 more
doaj   +1 more source

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