We have developed radical 1,3-difunctionalization reactions of allylboronic esters with concomitant 1,2-boron shift. Alkynyl triflones serve as CF3-radical precursors and as radical alkynylation reagents. Allylboronic esters are well established as allylation reagents in ionicchemistryand are therefore...
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It should be mentioned that the halogen-initiated cationic rearrangement in 7-oxabicycloheptenes, condensed with other heterocycles, was first demonstrated in 1985 [18]. Later, it was shown that N-bromosuccinimide (NBS) or bromine and iodine or ICl are the best reagents for halogen-promoted ...
Physical properties; Preparation: from nitriles, Grignard reagents, hydrolysis of esters and amides Preparation of benzoic acid from alkylbenzenes; Reactions: reduction, halogenation, formation of esters, acid chlorides and amides Amines Preparation from nitro compounds, nitriles and amides Reactions: Hof...
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The water used in all experiments was ultrapure. All reagents were used as received without further purification. Synthesis of Compound 1. Twenty milligrams of AgNO3 were dissolved in the mixture solution of dichloromethane and methanol. The solution was cooled to 0 °C in an ice bath, 10 ml ...
Catalytic enantioselective desymmetrization of meso compounds in total synthesis of natural products: towards an economy of chiral reagents. Synthesis 49, 1938–1954 (2017). Article Google Scholar Wu, M. H., Hansen, K. B. & Jacobsen, E. N. Regio- and enantioselective cyclization of epoxy ...
The impurities in drug substances mostly come from starting substrates, reagents, solvents, and side reactions of the synthetic route employed. Therefore, assessment and control of the undesired substances is an essential aspect of the drug development journey, with special consideration of patient healt...
Most proteins do not have many free sulfhydryl groups and one way to achieve the coupling of this group is to introduce sulfhydryl groups onto the protein using thiolating reagents; the most common one is 2-iminothiolane (Traut’s reagent). Feng et al., [77] used thiolating reagents, N-...