Tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid: a chiral derivatizing agent for the determination of the absolute configuration of secondary alcohols
摘要:
A new chiral derivatizing agent, tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid (THENA), with a represented syn-periplanar disposition of O-C(alpha)-C=O as a part of the bicyclic system to lock the aromatic residue conformation and the availability of an internal reference proton for (1)H NMR spectral alignment, is introduced. In the determination of the absolute configuration of chiral secondary alcohols, THENA offered good uniformity of Delta delta with high reliability, resulting in unambiguous assignment of the absolute configuration. (C) 2010 Elsevier Ltd. All rights reserved.
Tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid: a chiral resolving agent for the resolution and absolute configuration assignment of 7,7′-disubstituted 1,1′-bi-2-naphthols
Tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid (THENA), was applied as a chiral derivatizing agent to resolve 7,7'-disubstituted 1,1'-bi-2-naphthol derivatives. This process is very efficient and could potentially be used as a preliminary tool to assign the absolute configuration of substituted 1,1'-bi-2-naphthols by means of a simple TLC. (C) 2016 Elsevier Ltd. All rights reserved.