Stereoselectivity ratios in a simple Diels-Alder reaction in aqueous salt solutions of alcohols

TitleStereoselectivity ratios in a simple Diels-Alder reaction in aqueous salt solutions of alcohols
Publication TypeJournal Article
Year of Publication2005
AuthorsDeshpande, SS, Kumar, A
JournalTetrahedron
Volume61
Issue33
Pagination8025-8030
Date PublishedAUG
Type of ArticleArticle
ISSN0040-4020
Keywordsaqueous alcohols, Diels-Alder reaction, endolexo ratios, salts
Abstract

This is the first exhaustive report on the variation of stereoselectivity ratios for a simple Diels-Alder reaction between cyclopentadiene and methyl acrylate. The reaction was carried out in aqueous mixtures of methanol, ethanol, propan-1-ol and butan-1-ol in presence of LiClO4, LiCl, NaCl, KCl, CaCl2 and MgCl2. The endo sterecisomer decreases with the increase in carbon chain length of the alcohol. However, LiClO4, a salting-in agent in water becomes salting-out in aqueous mixtures of alcohols. The solvent properties, thus can be attuned by adjusting the amount of solvents and salts. (c) 2005 Elsevier Ltd. All rights reserved.

DOI10.1016/j.tet.2005.06.010
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)2.645
Divison category: 
Physical and Materials Chemistry