Direct reductive alkylation of amine hydrochlorides with aldehyde bisulfite adducts
作者:Marta Barniol-Xicota、Andreea L. Turcu、Sandra Codony、Carmen Escolano、Santiago Vázquez
DOI:10.1016/j.tetlet.2014.03.046
日期:2014.4
A mild procedure for the direct reaction of aromatic and aliphatic aldehyde bisulfite adducts with primary and secondary aminehydrochlorides in the presence of sodium cyanoborohydride in methanol is reported.
Straightforward Synthesis of Novel 1-(2′-α-O-D-Glucopyranosyl ethyl) 2-Arylbenzimidazoles
作者:Natarajan Arumugam、Aisyah Saad Abdul Rahim、Shafida Abd Hamid、Hasnah Osman
DOI:10.3390/molecules17089887
日期:——
series of novel 1-(2'-α-O-D-glucopyranosyl ethyl) 2-arylbenzimidazoles has been prepared via one-pot glycosylation of ethyl-1-(2'-hydroxyethyl)-2-arylbenzimidazole-5-carboxylate derivatives. Synthesis of the 2-arylbenzimidazole aglycones from 4-fluoro-3-nitrobenzoic acid was accomplished in four high-yielding steps. The reduction and cyclocondensation steps for the aglycone synthesis proceeded efficiently
Liquid–Liquid Extraction Protocol for the Removal of Aldehydes and Highly Reactive Ketones from Mixtures
作者:Maria M. Boucher、Maxwell H. Furigay、Phong K. Quach、Cheyenne S. Brindle
DOI:10.1021/acs.oprd.7b00231
日期:2017.9.15
The reaction of the bisulfite ion with aldehydes to form charged bisulfite adducts is a well-established method for the purification of aldehydes. This reaction has been modified to create a convenient liquid–liquid extraction method for the removal of aldehydes from mixtures. The use of a water-miscible solvent allows the reaction to occur during a simple 30 s shaking protocol by increasing the contact
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
Expedient Reductive Amination of Aldehyde Bisulfite Adducts
作者:Neelakandha Mani、Chennagiri Pandit
DOI:10.1055/s-0029-1217050
日期:2009.12
protocol for the direct reductive amination of aldehydebisulfite adducts is reported. Bisulfite adducts of aliphatic and aromatic aldehydes, on treatment with an organic base under non-aqueous conditions liberate the aldehyde in situ, which then undergoes efficient reductive amination with amines in the presence of sodium triacetoxyborohydride. Bisulfite adducts - reductive amination - sodium triacetoxyborohydride