6954-27-4Relevant articles and documents
Preparation of linear aromatic disulfonic acids: New linker molecules for metal-organic frameworks
Muesmann, Thomas W.T.,Wickleder, Mathias S.,Christoffers, Jens
experimental part, p. 2775 - 2780 (2011/10/31)
Four linear aromatic disulfonic acids were prepared, which are structurally similar to dicarboxylic acids commonly used as linker molecules for metal-organic frameworks. 4,4-Biphenyldisulfonic acid was prepared in three steps from 4,4-dibromobiphenyl (54% overall yield). Direct sulfonation of terphenyl gave the respective all-para-constituted disulfonic acid in 73% yield. Tolane-4,4-disulfonic acid was obtained by a three-step sequence consisting of Sonogashira coupling, oxidative degradation of a thioester, and hydrolysis in 20% overall yield. By using a Glaser coupling, the bis(4-sulfophenyl)butadiyne was analogously prepared in 30% overall yield. Georg Thieme Verlag Stuttgart - New York.
Synthesis, acidic and basic properties of thiols and sulfinic acids from the series of diphenyl bridging compounds
Alov,Nikiforov,Novikov,Kobylinskii,Moskvichev,Kryukova,Yasinskii,Budanov
, p. 1160 - 1164 (2007/10/03)
A series of dithiols and disulfinic acids belonging to diphenyl bridging compounds was prepared and identified. The conditions of reduction for the corresponding sulfonyl chlorides were optimized resulting in production of the target compounds in 85-95% yields. The acidity constants of the compounds obtained were measured. A correlation between pKa and δSH, was established for thiols. Therewith the dissociation constants of thiols are readily evaluated by the chemical shift of the thiol group proton.
Process for preparation of aromatic thiols
-
, (2008/06/13)
Disclosed is a process for preparation of an aromatic thiol corresponding to the structure wherein A is a substituted or unsubstituted aromatic radical and n is 1, 2, 3, 4, 5 or 6 comprising contacting at a temperature of at least 80° C. an aromatic halide corresponding to the structure wherein A is the same as above, X is bromine or iodine and n is 1, 2, 3, 4, 5, or 6 with thiourea in the presence of nickel metal.
