The 115 Year Old Multicomponent Bargellini Reaction: Perspectives and New Applications.

Despite its uniqueness, the Bargellini multicomponent reaction remains barely known by the most part of chemists. This can be ascribed to the fact that this transformation has not been adequately reviewed in the classic books of named reactions in organic chemistry. Nevertheless, several works on this reaction have been carried out over the years, many of them were written in Italian in the period 1929-1966. In this review article we extensively cover, in a chronological order, the most important applications of the Bargellini reaction reported to date, with the hope that this knowledge-sharing will help chemists to properly use this multicomponent transformation and imagine novel reactivities based on it.

[Theophile-Jules Pelouze (1807-1867) was one of the French pharmacists who has the most contributed to the evolution of the organic chemisty in the first half of the 19th century]. / Théophile-Jules Pelouze (1807-1867) Un pharmacien pionnier de la chimie organique.

Through some examples of his works, realized between 1833 and 1845 (studies on the tannin, the reaction of etherification, and on the nature of the chemical function of the glycerin), this article tries to bring to light his scientific approach. This one is not only based on the immediate analysis and the elementary analysis, but also on the study of characteristic chemical reactions, which are going to give him information onto the chemical nature and the constitution of the molecules which he studies. This approach will lead him finally to use these reactions not only in an analytical purpose but also in a purpose of synthesis.

J. Norman Collie, the inventive chemist.

Norman Collie was Professor of Organic Chemistry and Director of Laboratories at University College London between 1902 and 1928. He was a pioneering mountaineer but was also a prolific inventor; this review focuses on that little-known latter aspect of his activities.

The advent and development of organocatalysis.

The use of small organic molecules as catalysts has been known for more than a century. But only in the past decade has organocatalysis become a thriving area of general concepts and widely applicable asymmetric reactions. Here I present my opinion on why the field of organocatalysis has blossomed so dramatically over the past decade.

Italian chemists' contributions to named reactions in organic synthesis: an historical perspective.

From the second half of the 19th century up to modern times, the tremendous contribution of Italian chemists to the development of science resulted in the discovery of a number of innovative chemical transformations. These reactions were subsequently christened according to their inventors' name and so entered into the organic chemistry portfolio of "named organic reactions". As these discoveries were being conceived, massive social, political and geographical changes in these chemists' homeland were also occurring. In this review, a brief survey of known (and some lesser known) named organic reactions discovered by Italian chemists, along with their historical contextualization, is presented.

Schiff bases: a short survey on an evergreen chemistry tool.

The review reports a short biography of the Italian naturalized chemist Hugo Schiff and an outline on the synthesis and use of his most popular discovery: the imines, very well known and popular as Schiff Bases. Recent developments on their "metallo-imines" variants have been described. The applications of Schiff bases in organic synthesis as partner in Staudinger and hetero Diels-Alder reactions, as "privileged" ligands in the organometallic complexes and as biological active Schiff intermediates/targets have been reported as well.

Louis Pasteur, language, and molecular chirality. I. Background and dissymmetry.

Louis Pasteur resolved sodium ammonium (±)-tartrate in 1848, thereby discovering molecular chirality. Although hindered by the primitive state of organic chemistry, he introduced new terminology and nomenclature for his new science of molecular and crystal chirality. He was well prepared for this task by his rigorous education and innate abilities, and his linguistic achievements eventually earned him membership in the supreme institution for the French language, the Académie française. Dissymmetry had been in use in French from the early 1820s for disruption or absence of symmetry or for dissimilarity or difference in appearance between two objects, and Pasteur initially used it in the latter connotation, without any reference to handedness or enantiomorphism. Soon, however, he adopted it in the meaning of chirality. Asymmetry had been in use in French since 1691 but Pasteur ignored it in favor of dissymmetry. The two terms are not synonymous but it is not clear whether Pasteur recognized this difference in choosing the former over the latter. However, much of the literature mistranslates his dissymmetry as asymmetry. Twenty years before Pasteur the British polymath John Herschel proposed that optical rotation in the noncrystalline state is due to the "unsymmetrical" [his term] nature of the molecules and later used dissymmetrical for handed. Chirality, coined by Lord Kelvin in 1894 and introduced into chemistry by Mislow in 1962, has nearly completely replaced dissymmetry in the meaning of handedness, but the use of dissymmetry continues today in other contexts for lack of symmetry, reduction of symmetry, or dissimilarity.