The ubiquitousness of esters and amide functionalities makes their coupling reaction one of the most sought-after organic transformations. Herein, we have described an efficient microwave-assisted synthesis of esters and amides. Soluble triphenylphosphine, in conjugation with molecular iodine, gave the desired products without the requirement for a base/catalyst. In addition, a solid-phase synthetic
Selective Monoesterification of Symmetrical Diols Using Resin-Bound Triphenylphosphine
作者:Gunindra Pathak、Samuel Lalthazuala Rokhum
DOI:10.1021/acscombsci.5b00086
日期:2015.9.14
Coupling reactions to make esters and amides are among the most widely used organic transformations. We report efficient procedures for amide bond formation and for the monoesterification of symmetrical diols in excellent yields without any requirement for high dilution or slow addition using resin-bound triarylphosphonium iodide. Easy purification, low moisture sensitivity, and good to excellent yields
New, efficient methods for making novel platform molecules and polymerizable mesogens are provided, as well as the novel mesogens and methods of using same.
提供了制备新型平台分子和可聚合向列相的高效方法,以及新型向列相和使用方法。
QUINONE BASED NITRIC OXIDE DONATING COMPOUNDS FOR OPHTHALMIC USE
申请人:Nicox Science Ireland
公开号:EP2986288B1
公开(公告)日:2017-04-12
Pd-Catalyzed Silicon Hydride Reductions of Aromatic and Aliphatic Nitro Groups
作者:Ronald J. Rahaim、Robert E. Maleczka
DOI:10.1021/ol052120n
日期:2005.10.1
[reaction: see text] Room-temperature reduction of aromaticnitrogroups to amines can be accomplished in high yield, with wide functional group tolerance and short reaction times (30 min) using a combination of palladium(II) acetate, aqueous potassium fluoride, and polymethylhydrosiloxane (PMHS). Replacing PMHS/KF with triethylsilane allows aliphatic nitrogroups to be reduced to their hydroxylamines.