Copper-Catalyzed Microwave-Expedited Oxyphosphorylation of Alkynes with Diethyl Phosphite and <i>t</i>-Butyl Hydroperoxide Synthesis of Densely Functionalized Phosphonylated Indenones
作者:Pablo Macías-Benítez、Alfonso Sierra-Padilla、Manuel J. Tenorio、F. Javier Moreno-Dorado、Francisco M. Guerra
DOI:10.1021/acs.joc.1c01763
日期:2021.12.3
Treatment of alkynes with diethylphosphite and t-butyl hydroperoxide in the presence of [Cu(MeCN)4]BF4 under microwave irradiation produced the oxyphosphorylation of the triple bond, giving rise to the corresponding β-ketophosphonates in moderate-to-good yields. When the triple bond was conjugated to a carbonyl group bearing an aromatic ring, it led to the cyclization of the resulting ketone intermediate
Gold(I)-Catalyzed Hydration of Alkynylphosphonates: Efficient Access to β-Ketophosphonates
作者:Longyong Xie、Rui Yuan、Ruijia Wang、Zhihong Peng、Jiannan Xiang、Weimin He
DOI:10.1002/ejoc.201400066
日期:2014.5
A general, efficient, and highly regioselective protocol with the use of a gold(I) complex catalytic system for the transformation of alkynylphosphonates into the corresponding β-ketophosphonates has been successfully developed. This method produces a variety of β-ketophosphonates with the advantages of mild reaction conditions, high functional-group tolerance, and excellent yields.
A general preparation of chiral ruthenium(II) catalysts and the homogeneous enantioselective hydrogenation of prochiral olefins and keto groups are presented. Some applications to the synthesis of biologically active compounds are reported. (C) 1998 Elsevier Science S.A. All rights reserved.
Copper/Iron-Catalyzed Aerobic Oxyphosphorylation of Terminal Alkynes Leading to β-Ketophosphonates
作者:Niannian Yi、Ruijia Wang、Huaxu Zou、Weibao He、Wenqiang Fu、Weimin He
DOI:10.1021/acs.joc.5b00408
日期:2015.5.15
A copper/iron-catalyzed oxyphosphorylation of alkynes with H-phosphonates through a radical process was developed. The present protocol provides an attractive approach to beta-ketophosphonates in moderate to good yields, with the advantages of readily available substrate, high functional group tolerance and operation simplicity.