scholarly journals Multi-component reaction between aromatic aldehyde, ethyl acetoacetate and urea catalyzed by Brönsted ionic liquid under microwave irradiation

2019 ◽  
Vol 2 (3) ◽  
pp. 68-77
Author(s):  
Hai Truong Nguyen ◽  
Nguyen Thi Thanh Huynh ◽  
Phuong Hoang Tran
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Ionic Liquid ◽  
Catalytic Activity ◽  
Microwave Irradiation ◽  
Organic Synthesis ◽  
Short Reaction Time ◽  
Ionisation Mass Spectrometry ◽  
High Yields ◽  
Ionisation Mass

[(SO3H)4C4C1Im]HSO4 is a Brönsted ionic liquid, which was found to be an effective catalyst for organic synthesis. Ionic liquid was prepared from 1-methylimidazole and 1,4- butanesultone (ratio = 1:1), structure of [(SO3H)4C4C1Im]HSO4 was characterized by using nuclear magnetic resonance NMR spectroscopy and high-resolution electrospray ionisation mass spectrometry (HR-ESI-MS). Ionic liquid was used as a catalyst for multi-component reaction, which afforded the desired products in high yields (over 80%) and short reaction time (5 min) under microwave irradiation. The catalyst could be recycled several times without loss of efficient catalytic activity.

scholarly journals Synthesis of tetrazolo[1,5-a]pyrimidine-6-carbonitriles using HMTA-BAIL@MIL-101(Cr) as a superior heterogeneous catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Hossein Abdollahi-Basir ◽  
Boshra Mirhosseini-Eshkevari ◽  
Farzad Zamani ◽  
Mohammad Ali Ghasemzadeh
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Reaction Time ◽  
Metal Organic Framework ◽  
One Pot ◽  
Short Reaction Time ◽  
Three Component Reaction ◽  
Metal Organic ◽  
Ft Ir ◽  
Novel Catalyst

AbstractA one-pot three component reaction of benzaldehydes, 1H-tetrazole-5-amine, and 3-cyanoacetyl indole in the presence of a new hexamethylenetetramine-based ionic liquid/MIL-101(Cr) metal–organic framework as a recyclable catalyst was explored. This novel catalyst, which was fully characterized by XRD, FE-SEM, EDX, FT-IR, TGA, BET, and TEM exhibited outstanding catalytic activity for the preparation of a range of pharmaceutically important tetrazolo[1,5-a]pyrimidine-6-carbonitriles with good to excellent yields in short reaction time.

scholarly journals In situ characterisation of phytohormones from wounded Arabidopsis leaves using desorption electrospray ionisation mass spectrometry imaging

The Analyst ◽  
2021 ◽  
Author(s):  
Chao Zhang ◽  
Asta Žukauskaitė ◽  
Ivan Petřík ◽  
Aleš Pěnčík ◽  
Martin Hönig ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Plant Development ◽  
Plant Hormones ◽  
Stress Responses ◽  
Mass Spectrometry Imaging ◽  
Signalling Molecules ◽  
Ionisation Mass Spectrometry ◽  
Endogenous Regulators ◽  
Ionisation Mass

Phytohormones (plant hormones) are a group of small signalling molecules that act as important endogenous regulators in the plant development and stress responses. Previous research has identified phytohormone species, jasmonates,...

Sign in / Sign up

Export Citation Format

Share Document