Bisulfite Addition Compounds as Substrates for Reductive Aminations in Water
作者:Xiaohan Li、Karthik S. Iyer、Ruchita R. Thakore、David K. Leahy、J. Daniel Bailey、Bruce H. Lipshutz
DOI:10.1021/acs.orglett.1c02604
日期:2021.9.17
Highly valued products resulting from reductive aminations utilizing shelf-stable bisulfiteadditioncompounds of aldehydes can be made under aqueous micellar catalysis conditions. Readily available α-picolineborane serves as the stoichiometric hydride source. Recycling of the aqueous reaction medium is easily accomplished, and several applications to targets in the pharmaceutical industry are documented
Phosphoryl Chloride Mediated Synthesis of 5-Arylidene-2,4-Thiazolidinediones Derivatives via Aromatic Bisulfite Adducts
作者:Sandeep Mohanty、Sandeep G、Arun Karmakar
DOI:10.2174/15701786113106660081
日期:2014.2
The carbon-carbon bond formation by the condensation of bisulfite adduct of aromatic aldehydes with
thiazolidine-2, 4-dione to furnish 5-arylidene-2,4-thiazolidinedione’s has been investigated. This novel methodology was
applied to convert substituted aryl bisulfite adducts to corresponding 5-arylidene-2,4-thiazolidinedione’s with POCl3 in
less-polar solvents such as toluene, chlorobenzene and o-xylene. 5-(4-methoxybenzylidene)thiazolidine-2,4-dione and
5-(4-ethoxybenzylidene)thiazolidine-2,4-dione were obtained in good yields.
In this study, 15 new 1H-benzimidazole-5-carboxamidine derivative compounds that could be new antimicrobial agents were synthesized and their antimicrobial activities were determined using the microdilution method. When the activity results were examined, it was observed that the antibacterial effects of the new benzimidazole derivatives were weaker than standard drugs, but some derivatives showed
Acetic anhydride-promoted one-pot condensation of 2,4-thiazolidinedione with bisulfite adducts of aldehydes
作者:Sandeep Mohanty、Amrendra Kumar Roy、Vinay K.P. Kumar、Sandeep G. Reddy、Arun Chandra Karmakar
DOI:10.1016/j.tetlet.2014.06.082
日期:2014.8
We describe a simple and efficient one-pot method for condensing bisulfite adducts of aromatic aldehydes directly with 2,4-thiazolidinedione catalyzed by acetic anhydride. The two main highlights of this study are the one-pot condensation of bisulfite adducts with 2,4-thiazolidinedione in non-aqueous media and the use of Design of Experiment to understand and optimize the reaction conditions. This