About The Author
About Author: Akul Mehta
Posts by Akul Mehta
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Ultraviolet-Visible (UV-Vis) Spectroscopy – Limitations and Deviations of Beer-Lambert Law
Posted on May 14, 2012 | No CommentsUnder certain circumstances the Beer Lambert relationship breaks down and gives a non-linear relationship. These deviations from the Beer Lambert law can be classified into three categories: real deviations, instrument deviations and chemical deviations. -
Ultraviolet-Visible (UV-Vis) Spectroscopy – Derivation of Beer-Lambert Law
Posted on April 22, 2012 | No CommentsBeer-Lambert law (also called Beer's law) helps to correlate the intensity of absorption of UV-visible radiation to the amount of substance presence in a sample. -
Pharmacognosy of Vinca Alkaloids (Periwinkle)
Posted on January 1, 2012 | 1 CommentVinca alkaloids are obtained mainly from a species of periwinkle known as Madagascar Periwinkle. Vinca alkaloids are chemically indole alkaloids and are known to possess anti-cancer, anti-hypertensive and anti-diabetic roles. -
Pharmacognosy of Ergot (Argot or St. Anthony’s Fire)
Posted on December 30, 2011 | No CommentsErgot is an alkaloid containing dried sclerotium of a fungus, containing mainly indole alkaloids called ergolines. It is traditionally used to labour to assist delivery (oxytocic) and to reduce post-partum haemorrhage. -
Ultraviolet-Visible (UV-Vis) Spectroscopy – Principle
Posted on December 13, 2011 | No CommentsThe principles involved in the utility of ultraviolet-visible spectroscopy (UV-Vis spectroscopy) -
Introduction to the Electromagnetic Spectrum and Spectroscopy
Posted on August 24, 2011 | 1 CommentThe electromagnetic spectrum is radiation found in day to day life. The most common type of electromagnetic radiation is light. Spectroscopy and spectroscopic techniques help to study the interactions between matter and the electromagnetic radiation. -
Boron Enolates for Aldol Synthesis and Other Reactions
Posted on August 22, 2011 | No CommentsPreparation of boron enolates offers an advantage of obtaining highly selective enolate to control aldol condensation. -
Directed Aldol Synthesis: Part 2 – Syn and Anti control using Zimmerman Traxler principle
Posted on August 3, 2011 | No CommentsAldol synthesis gives rise to stereocenters in the molecule. Directed aldol synthesis is an approach in order to control the stereochemistry of the product being formed. Part 2 considers how to control whether syn products or whether anti products are formed utilizing the Zimmerman Traxler principle of stereocontrol. -
Directed Aldol Synthesis: Part 1 – Formation of E-Enolate and Z-Enolate
Posted on August 2, 2011 | 1 CommentAldol synthesis gives rise to stereocenters in the molecule. Directed aldol synthesis is an approach in order to control the stereochemistry of the product being formed. Formation of the enolate is the first step in aldol synthesis, and hence stereocontrol must begin with the first step itself. -
Aldol Condensation – Acid Catalyzed
Posted on June 29, 2011 | No CommentsAldol condensation reaction can be either acid catalyzed or base catalyzed. This page deals with the acid catalysis mechanism of the aldol reaction.