Fluoroboric acid adsorbed on silica gel as a new and efficient catalyst for acylation of phenols, thiols, alcohols, and amines
作者:Asit K. Chakraborti、Rajesh Gulhane
DOI:10.1016/s0040-4039(03)00683-x
日期:2003.4
Fluoroboric acid supported on silica gel efficiently catalyzes acylation of structurally diverse phenols, alcohols, thiols, and amines undersolventfree conditions. Acid-sensitive alcohols are smoothly acylated without competitive side reactions.
Electrostatic catalysis by ionic aggregates: scope and limitations of Mg(ClO4)2 as acylation catalyst
作者:Asit K Chakraborti、Lalima Sharma、Rajesh Gulhane、Shivani
DOI:10.1016/j.tet.2003.08.007
日期:2003.9
Alkali and alkaline earthmetal perchlorates exhibit electrostatic catalysis in the activation of anhydrides for the acylation reaction. Perchlorates with higher values of the charge-size function of the metal ion exhibit better catalytic activity following the order Mg(ClO4)2>Ba(ClO4)2>LiClO4. Acylation of structurally diverse phenols, thiols, alcohols, and amines have been carried out with stoichiometric
Indium(III) chloride as a new, highly efficient, and versatile catalyst for acylation of phenols, thiols, alcohols, and amines
作者:Asit K. Chakraborti、Rajesh Gulhane
DOI:10.1016/s0040-4039(03)01641-1
日期:2003.8
Indium(III) chloride efficiently catalyses the acylation of structurally diverse phenols, alcohols, thiols, and amines undersolventfree conditions. Acid sensitive alcohols are smoothly acylated without competitive side reactions. Acylation of 2-hydroxynaphthalene is carried out with carboxylic acids adopting the mixed anhydride protocol using trifluoroacetic anhydride.
[EN] ACETYLATED PRODRUGS FOR DELIVERY ACROSS THE BLOOD-BRAIN BARRIER<br/>[FR] PROMÉDICAMENTS ACÉTYLÉS POUR ADMINISTRATION À TRAVERS LA BARRIÈRE HÉMATO-ENCÉPHALIQUE
申请人:MASSACHUSETTS GEN HOSPITAL
公开号:WO2019204808A1
公开(公告)日:2019-10-24
The present disclosure relates to pharmaceutical compositions including a compound derived from a parent compound having a hydroxyl or amino moiety, wherein the hydroxyl in the parent compound is presented as an ester in the compound or the amino in the parent compound is presented as an amide in the compound, and their use to prevent or treat neurological disease.