111771-08-5Relevant articles and documents
Base- and Additive-Free Ir-Catalyzed ortho-Iodination of Benzoic Acids: Scope and Mechanistic Investigations
Erbing, Elis,Sanz-Marco, Amparo,Vázquez-Romero, Ana,Malmberg, Jesper,Johansson, Magnus J.,Gómez-Bengoa, Enrique,Martín-Matute, Belén
, p. 920 - 925 (2018/02/14)
A protocol for the C-H activation/iodination of benzoic acids catalyzed by a simple iridium complex has been developed. The method described in this paper allows the ortho-selective iodination of a variety of benzoic acids under extraordinarily mild conditions in the absence of any additive or base in 1,1,1,3,3,3-hexafluoroisopropanol as the solvent. The iridium catalyst used tolerates air and moisture, and selectively gives ortho-iodobenzoic acids with high conversions. Mechanistic investigations revealed that an Ir(III)/Ir(V) catalytic cycle operates, and that the unique properties of HFIP enables the C-H iodination using the carboxylic moiety as a directing group.
ISOQUINOLINES USEFUL AS INDUCIBLE NITRIC OXIDE SYNTHASE INHIBITORS
-
, (2008/12/08)
Disclosed herein are new isoquinoline compounds and compositions and their application as pharmaceuticals for the treatment of disease. Methods of inhibition of nitric oxide synthase activity in a human or animal subject are also provided for the treatment disease.
Promoting or preventing haloaryllithium isomerizations: Differential basicities and solvent effects as the crucial variables
Heiss, Christophe,Rausis, Thierry,Schlosser, Manfred
, p. 617 - 621 (2007/10/03)
Deprotonation-triggered heavy halogen migrations should become a favorite tool in arene synthesis if their occurrence and outcome could be made predictable. Particularly attractive, though extremely rare, are stop-and-go situations where a first intermediate, generated by metalation, can be trapped at -100 °C, whereas at -75 °C halogen migration gives rise to an isomer. As shown now, one can conveniently produce the initial aryllithium species by halogen/metal interconversion in toluene at -100 °C, under conditions that preclude, halogen migration, and unleash the isomerization process by adding tetrahydrofuran at -75 °C.
