The Methylation of Para-Aminophenol by Means of Formaldehyde (Classic Reprint)
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Book Details
Author(s)
Ernest Carl Wagner
Publisher
Forgotten Books
ISBN / ASIN
133086686X
ISBN-13
9781330866863
Marketplace
France 🇫🇷
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Description
Excerpt from The Methylation of Para-Aminophenol by Means of Formaldehyde
I. The Condensations of Formaldehyde and Aromatic Amines
In the condensations of formaldehyde with the amines, the fundamental change consists in the splitting out of the elements of water, with the result that a methylene-group is introduced. Typically the necessary hydrogen atoms are displaced from an amino-group, or from two imino-groups. It is characteristic of certain condensations, however, that only nuclear hydrogen atoms are involved. The course of the condensation depends upon (a) the nature of the medium in which condensation occurs, i.e., whether neutral, alkaline, or acid, (b) the relative proportions of amine and aldehyde, (c) the presence of substances with which further reaction may occur, and (d) the influence of substituent groups present in the amine molecule.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
I. The Condensations of Formaldehyde and Aromatic Amines
In the condensations of formaldehyde with the amines, the fundamental change consists in the splitting out of the elements of water, with the result that a methylene-group is introduced. Typically the necessary hydrogen atoms are displaced from an amino-group, or from two imino-groups. It is characteristic of certain condensations, however, that only nuclear hydrogen atoms are involved. The course of the condensation depends upon (a) the nature of the medium in which condensation occurs, i.e., whether neutral, alkaline, or acid, (b) the relative proportions of amine and aldehyde, (c) the presence of substances with which further reaction may occur, and (d) the influence of substituent groups present in the amine molecule.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
