English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

E-mail: hossaini@shirazu.ac.irReceived August 22, 2011, Accepted October 11, 2011Under solvent-free conditions, the synthesis of propargylic alcohols by direct addition of terminal alkynes toaldehydes promoted by ZnO as a novel, commercially, and cheap catalyst is described. Furthermore, thecatalyst can be reused for several times without any significant loss of its catalytic activity. Key Words : Propargylic alcohols, ZnO, Terminal alkynes, Solvent-free conditions, AldehydesIntroductionCarbon-carbon bond formation reactions are amongst theimportant transformations in organic chemistry. The alkyn-ylation of carbonyl compounds is a direct chain extensionreaction.

Solvent-free Synthesis of Propargylic Alcohols using ZnO as a New and Reusable Catalyst by Direct Addition of Alkynes to Aldehydes