The Manufacture of Diethylmercaptol and of a Sulphone therefrom.
Year: 1888

page_text: Date of Application, 31st Aug., 1883
Complete Specification Left, 28th May, 1889-Accepted, 29th June, 1889
PROVISIONAL
SPECIFICATION.
The Manufacture of Diethylmercaptol and of a Sulphone therefrom.
1, JAMES YATE JOHNSON of 47 Lincoln's Inn Fields in the County of Middlesex
Gentleman o hereby declare the nature of this Invention which has been com-
municated to me from abroad by The Farbenfabriken vormals Friedrich Bayer and
Co., of Elberfeld in the Empire of Germany to be as follows
This process consists essentially in the production of ethyl or diethylmercaptol by
the action of ethyl or diethyl Ketone upon ethyl sulph hydrate in the presence of
hydrochloric acid and converting the aforesaid diethylmercaptol into diethyl sulphone
diethyl methan by oxidation with oxidising agents as hereinafter described.
Dry Hydrochloric acid gas is introduced to saturation into a solution of about 14
parts by weight (14 Kilos) of ethylsulphhydrate (ethylmercapian) and about 10 parts
by weight (10 Kilos) of diethyl Ketone cooled by means of ice. The condensation of
the Ketone with the mercaptan into mercapto! proceeds regularly and is completed in
a few hours.
The oil which is separated by the addition of water from the mixed products of
reaction is removed and after repeated washings with soda lye is dried upon chloride of
calcium and purified by rectification in vacuo. It boils at from about 225 to 230
degrees centigrade and possesses a strong odour of ether.
To convert this product into the new disulphone: it is mixed in a weak watery solu-
tion with a 5 per cent. solution of permanganate and an neid preferably acetic acid
until decolourisation of the permanganate ceases. By boiling down the watery solution
filtering and concentrating the filtrate the disulphone is obtained in the form of silvery
scales fusible at 89 degrees centigrade. This product is perfectly tasteless and odour-
less, slightly soluble in cold water but readily soluble in hot water ether alcohol and
other like solvents.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents for the said James Yate Johnson.
COMPLETE SPECIFICATION.
The Manufacture of Diethylmercaptol and of a Sulphone therefrom.
I, JAMES YATE JOHNSON of 47 Lincoln's Inn Fields in the County of Middlesex
do hereby declare the nature of this Invention which has been communicated to
me from Abroad by the Farbenfabriken vormals Friedrich Bayer & Co., of Elberfeld
in the Empire of Germany and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
This process consists essentially in the production of diethyl mercaptol by the action
of diethyl ketone upon ethyl sulph hydrate in the presence of hydrochloric acid or
concentrated or diluted sulphuric acid and converting the aforesaid diethyl mercaptoi
into diethyl sulphone diethyl methan by oxidation with oxidising agents as hereinafter
described.
Dry hydrochloric acid gas for example is introduced to saturation into a solution of
about 14 parts by weight of ethyl mercaptan (ethyl sulph hydrate) and about 10 parts
by weight (10 Kilo) of diethyl Ketone cooled by means of water or ice. The con-
densation of the Ketone with the mercaptan into mercaptol proceeds regularly and is
completed in a few hours. The oil obtained being separated by the addition of water
from the mixed products of reaction is removed and after repeated washings with soda
lye is dried with chloride of calcium and purified by rectification in vacuo.
This

page_text: product constituting the diethyl mercaptol obtained according to this invention boils
at from about 225 to 230 degrees centigrade and possesses a strong odour. To convert
this product into the new sulphone herein before referred to it is subjected to an
oxidising process.
For this purpose for example: 1 Kilo Mercaptol is dissolved in 50 Kilos water and
to this solution are slowly added 4 Kilos Permanganate dissolved in 80 Kilos water,
and 1 Kilo concentrated sulphuric acid. The oxidation is finished if the Permanganate
is totally discoloured. By boiling down the watery solution filtering and concen-
trating the filtrate the diethyl sulphone diethyl methane is obtained in the form of
silvery scales fusible at from about 87 to 89 degrees centigrade. This product is
perfectly tasteless and odourless slightly soluble in cold water but readily soluble in
hot water, ether alcohol and other like solvents.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The process for producing diethyl mercaptol by condensing diethyl Ketone with
ethyl mercaptan in presence of hydrochloric acid or of sulphuric acid substantially as
hereinhefore set forth.
2. The process for producing diethyl-sulpbone diethyl methane, by treating diethyl
mercaptol with oxidising agents substantially as herein before set forth.
3. As new articles of manufacture the products herein before described.
11
501
1
1623
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.