Gold-Catalyzed Sequential Alkyne Activation for the Synthesis of 4,6-Disubstituted Phosphorus 2-Pyrones
摘要:
Tandem gold-catalyzed addition of alkynyl phosphonic acid monoethyl esters to terminal alkynes and cyclization were developed for the synthesis of 4,6-disubstituted phosphorus 2-pyrones in one reaction vessel based on the concept of sequential alkyne activation. Alkynyl enol phosphonates were selectively obtained through the gold-catalyzed addition reaction in the presence of a catalytic amount of triethylamine. Also, gold-catalyzed cyclization of alkynyl enol phosphonates was successful in giving a variety of 4,6-disubstituted phosphorus 2-pyrones.
NOVEL PHOSPHORUS 2-PYRONE DERIVATIVE AND PREPARATION METHOD THEREOF
申请人:KNU-INDUSTRY COOPERATION FOUNDATION
公开号:US20150191497A1
公开(公告)日:2015-07-09
Provided are a novel phosphorus 2-pyrone derivative and a preparation method thereof. The phosphorus 2-pyrone derivative according to the present invention is capable of being efficiently synthesized by treating an alkyl hydrogen alkynylphosphonate derivative and an alkyne derivative with a minimal amount of a gold catalyst.
Phosphorus 2-pyrone derivative and preparation method thereof
申请人:KNU-INDUSTRY COOPERATION FOUNDATION
公开号:US09200019B2
公开(公告)日:2015-12-01
Provided are a novel phosphorus 2-pyrone derivative and a preparation method thereof. The phosphorus 2-pyrone derivative according to the present invention is capable of being efficiently synthesized by treating an alkyl hydrogen alkynylphosphonate derivative and an alkyne derivative with a minimal amount of a gold catalyst.