Recent advancements in the multicomponent synthesis of heterocycles integrated with a pyrano [2, 3-d] pyrimidine core

AY El-Khateeb, SE Hamed, KM Elattar - RSC advances, 2022 - pubs.rsc.org
Heterocyclic compounds incorporated with a pyranopyrimidine skeleton have received
substantial consideration owing to their privileged, and intelligible biodiversity. Accordingly …

Importance of Hybrid Catalysts toward the Synthesis of 5H-Pyrano[2,3-d]pyrimidine-2-ones/2,4-diones (Thiones)

MP Parmar, RM Vala, HM Patel - ACS omega, 2023 - ACS Publications
The pyranopyrimidine core is a key precursor for medicinal and pharmaceutical industries
due to its broader synthetic applications as well as its bioavailability. Among its four possible …

Insights into the recent progress in the medicinal chemistry of pyranopyrimidine analogs

KM Elattar, AY El-Khateeb, SE Hamed - RSC Medicinal Chemistry, 2022 - pubs.rsc.org
Heterocycles containing the pyranopyrimidine motif have attracted the interest of
researchers in recent decades due to their ability to synthesize and explore at a large scale …

[HTML][HTML] A Review on Barbituric Acid and Its Derivatives: Synthesis, Reactions, and Bio-Applications

N Kaur, M Kaur, HS Sohal, H Han, PK Bhowmik - Organics, 2024 - mdpi.com
Barbituric acid is a heterocyclic compound with various pharmacological and biological
applications. This review paper provides a comprehensive overview of barbituric acid's …

The liquid phase of 4, 4'-trimethylenedipiperidine: a safe and greener dual-task agent for clean and facile synthesis of coumarin derivatives

H Gorjian, NG Khaligh - Molecular Diversity, 2022 - Springer
A practical and facile synthesis of various coumarin derivatives was conducted using a liquid
phase of 4, 4'-trimethylenedipiperidine as a safe and greener dual-task reagent under …

Impact of a homogeneous hydrogen bond catalysis for the ethyl (hetero) arylidene cyanoacetate preparation in the presence of TMDP

S Johari, MR Johan, N Ghaffari Khaligh - Research on Chemical …, 2024 - Springer
The synthesis of ethyl (hetero) arylidene cyanoacetates, valuable intermediates in organic
chemistry, has been investigated using several commercially available and synthetic …

Determining the pKa1 and pKa2 Values of 4,4′-Trimethylenedipiperidine (TMDP), a Diprotic Organic Base with Unknown pKa Values

L Zaharani, NG Khaligh - Journal of Solution Chemistry, 2024 - Springer
The negative logarithm of the acid dissociation constant values (p K a1 and p K a2) of 4, 4′-
trimethylenedipiperidine (TMDP) was determined by a pH metric titration at 298 K. The …

Student exploration of the Henderson-Hasselbach equation and pH readings to determine the pK a value of 4,4′-trimethylenedipiperidine (TMDP)

L Zaharani, NG Khaligh - Chemistry Teacher International, 2023 - degruyter.com
This educatory experiment uses an inexpensive pH meter to determine an approximate
negative logarithm of the acid dissociation constant (p K a) value of 4, 4 …

4,4′-Trimethylenedipiperidine, a safe and greener alternative for piperidine, catalyzed the synthesis of N-methyl imines

H Gorjian, NG Khaligh - Research on Chemical Intermediates, 2022 - Springer
A practical and facile synthesis of various N-methyl imines, versatile scaffolds, was
conducted at 85° C using 4, 4′-trimethylenedipiperidine as a safe and green catalyst. This …

Simultaneous activation of aldehydes and methylamine liberation by 4,4ʹ-trimethylenedipiperidine in the solid-state synthesis of N-methyl imines

L Zaharani, M Ghafarikhaligh, S Titinchi… - Research on Chemical …, 2023 - Springer
Abstract The commercially available 4, 4ʹ-trimethylenedipiperidine (TMDP) was used in the
solid state to activate various aldehydes and controlled the libration of methyl amine for …