Ring-Closing Metathesis at Room Temperature within Nanometer Micelles using Water as the Only Solvent
作者:Bruce H. Lipshutz、Subir Ghorai、Grant T. Aguinaldo
DOI:10.1002/adsc.200800114
日期:2008.5.5
Simply mixing a water-insoluble diolefinic substrate and Grubbs second generation catalyst in pure water containing small amounts of the amphiphile polyoxyethanyl α-tocopheryl sebacate (PTS) leads to efficient ring-closing metathesis.
PQS: A New Platform for Micellar Catalysis. RCM Reactions in Water, with Catalyst Recycling
作者:Bruce H. Lipshutz、Subir Ghorai
DOI:10.1021/ol8027829
日期:2009.2.5
The first "designer" surfactant containing a covalently bound ruthenium catalyst is reported. This species dissolves freely in water, forming nanomicelles in which ring-closing metathesis reactions on water-insoluble dienic substrates can occur in pure water at room temperature. It can also be recycled continuously without reaction workup.