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
One-Pot Conversion of Aldehyde Sodium Bisulfites into Nitriles
作者:Jintao Zhu、Guangwei Song、Guoxin Yao、Gang Chen
DOI:10.1080/00397911.2010.548890
日期:2012.7.1
Abstract Direct conversion of aldehyde sodium bisulfites to the corresponding nitriles can be easily performed by the reaction of an aldehyde sodium bisulfites with a slight execss of hydroxylamine hydrochloride in refluxing toluene and in the presence of 1.0 equivalents of pyridine as catalyst. GRAPHICAL ABSTRACT
Synthesis & Anticancer Evaluation of New Substituted 2-(3,4- Dimethoxyphenyl)benzazoles
作者:Cigdem Karaaslan、Yalcin Duydu、Aylin Ustundag、Can O. Yalcin、Banu Kaskatepe、Hakan Goker
DOI:10.2174/1573406414666180711130012
日期:2019.4.12
principle of bioisosterism, in the present work, 23 compounds belonging to 2-(3,4-dimethoxyphenyl)benzazoles and imidazopyridine series were synthesized and evaluated for their anticancer and antimicrobial activities. Objective: A series of new 2-(3,4-dimethoxyphenyl)-1H-benz(or pyrido)azoles were synthesized and evaluated for their anticancer and antimicrobial activities. Method: N-(5-chloro-2-hdroxyphenyl)-3
Regeneration of Aldehydes from Bisulfite Addition Products in the Solid State using Montmorillonite KSF Clay under Microwave Irradiation
作者:Alok Kumar Mitra、Aparna De、Nilay Karchaudhuri
DOI:10.1039/a900309f
日期:——
Microwaveirradiation of bisulfite addition products with montmorilloniteKSFclayundersolvent-freeconditions provides a fast, efficient and simple method for regeneration of aldehydes in excellent yields.
Syntheses of Apogalanthamine Analogues as α-Adrenergic Blocking Agents. XII. : Syntheses and Stereochemistry of Methoxy and Methylenedioxy Derivatives of 8-Hydroxy-5, 6, 7, 8-tetrahydrodibenz-[c, e]azocines
8-tetrahydrodibenz[c, e]azocines 4b, c and their methoxy and methylenedioxy derivatives 7a-c and 8a-c were prepared by cyclization of O-protected 1-phenyl-2-aminoethanols 6b, c, 9a-c and 10a-c with zerovalent nickel, followed by hydrolysis of the resulting O-protected azocines 4d, e, 7d-f and 8d-f, respectively. The half-tub conformation of the tetrahydroazocine ring of these 8-hydroxydibenz[c, e]azocines and the