A supported palladium nanocatalyst for copper free acyl Sonogashira reactions: One-pot multicomponent synthesis of N-containing heterocycles
作者:Subhankar Santra、Kalyan Dhara、Priyadarshi Ranjan、Parthasarathi Bera、Jyotirmayee Dash、Swadhin K. Mandal
DOI:10.1039/c1gc15869d
日期:——
efficient heterogeneous nanocatalytic system for the copper free acyl Sonogashirareaction. A wide range of ynones was synthesized in high yields undermildreactionconditions. The catalyst was recovered and recycled up to four times. Transmission electron microscopy (TEM) images revealed that the catalyst maintained nanospheric dimensions for four consecutive catalytic cycles. This simple protocol was further
In the presence of silver tetrafluoroborate, S-ethyl carbothioates reacted with 1-alkynyltrimethylsilanes to give the corresponding acetylenic ketones in good yields.
作者:Erin Westley、Madison J. Sowden、Nicholas L. Magann、Kelsey L. Horvath、Kieran P. E. Connor、Michael S. Sherburn
DOI:10.1021/jacs.1c11598
日期:2022.1.19
A general synthetic approach to molecular structures that are hybrids of tetraethynylethylene (TEE) and tetravinylethylene (TVE) is reported. The synthesis permits the controlled preparation of many previously inaccessible structures, including examples with different substituents on each of the four branching arms. Most substituted TVE–TEE hybrids are found to be significantly more robust compounds