Нашли опечатку? Выделите ее мышкой и нажмите Ctrl+Enter
Название: Practical organic chemistry
Авторы: Mann F., Saunders B.
Iq the preparation of this revised and extended edition. we have had in mind txvo major factors.
First, considerably greater emphasis has been placed on semi-
micro techniques and their application to preparations, separa-
tions, analysis and physical determinations such as those of
molecular weight. We have therefore greatly expanded the
section on Manipulation on a semi-micro scale which was in the
Third Edition, and xve have described many more preparations
on this scale, some independent and others as alternatives to
the larger-scale preparations which immediate. ly precede them.
Some 4 � separate p.reparations on the senu-micro scale are
described in detail, in addition to specific directions for the
preparation of many classes of crystalline derivatives required
for identification purposes. The equipment required for these
small-scale reactions has been selected on a realistic basis, and
care has been taken not to include the very curious pieces of
apparatus sometimes suggested as necessary for working on the