Sodium Naphthalene. II. Preparation and Properties of Dihydronaphthalene Dicarboxylic Acids

Abstract

Analyzed as sodium salt. 6 Previously described by Buttle, Gray, and Stephenson* and Rosenthal, Bauer, and Branham.6 8 Mentioned but not described by Kamlet at American Chemical Society Meeting, Rochester, N. Y., September, 1937. d From 10% alcohol a product melting at 132°was obtained. This is a mixture of the salt and free base as was shown by analysis. In order to obtain the pure salt it is necessary to add a trace of hydrochloric acid to the dilute alcohol used for crystallizing.* Sodium salt purified by precipitation with acetone. 1 Reported but not described by Dochez and Slanetz [Science, 87, 142 (1938)]. 8 Reported but not described by Bauer and Rosenthal [Public Health Reports, 53, 40 (1938)]. ¿j-Uraminobenzenesulfonamide.-The procedure used in this preparation is that of Buck and Ferry.1 A mixture of 34.4 g. of ^-aminobenzenesulfonamide and 24 g. of nitrourea in 50 cc. of alcohol was warmed gently until evolution of gas ceased. The alcohol was then boiled off and the resulting solid recrystallized from water.The author wishes to thank Mr. Harold Emerson for the micro-analyses reported.

Redox-neutral Photocatalytic C-H Carboxylation of Arenes and Styrenes with CO2

“…By contrast, aromatic radical anions formed in the presence of alkali metal have always been considered poor nucleophiles, 61 yet still showed reactivity towards CO2. 62,63 With a strongly reducing photoredox catalyst in hand and inspired by early literature reports, we questioned if a similar reactivity of aromatic radical anions towards carbon dioxide can be obtained under much milder photocatalytic conditions.…”

Electrocarboxylation of Carbon Dioxide with Polycyclic Aromatic Hydrocarbons Using Ni as the Cathode

“…Walker and Scott 24 firstly described the preparation of dihydronaphthalene dicarboxylic acid from sodium naphthalene and CO 2 via conventional organic synthetic method. However, the preparation of sodium naphthalene is quite trouble via the reaction of naphthalene with metal sodium, and the following reaction was carried out under extreme conditions (such as temperature -70℃ to -80℃).…”

A Safe Organic Oxygen Battery Built with Li‐Based Liquid Anode and MOFs Separator

“…The total conductivity is thus calculated as 1.11 × 10 −2 S cm −1 for the 1 m Bp‐Li and 1.36 × 10 −2 S cm −1 for the 2 m Bp‐Li. Ever since the first discovery in 1930s, the electric conductivity is considered an interesting phenomenon for these solution 34. The DC conductivity of the 2 m Bp‐Li anode is further measured through a voltmeter ammeter method.…”

“…Ever since the first discovery in 1930s, the electric conductivity is considered an interesting phenomenon for these solution. [34] The DC conductivity of the 2 m Bp-Li anode is further measured through a voltmeter ammeter method. We successively apply different DC voltages between the Bp-Li anode sandwiched by two copper current collectors.…”