作者:Martins S. Oderinde、Robert D. J. Froese、Michael G. Organ
DOI:10.1002/anie.201303736
日期:2013.10.18
free‐radical hydrostannylation of alkynes has been extensively studied and while every published mechanism involves solely radical intermediates, this appears not to be correct. Trace molecular oxygen is necessary for any radical‐mediated hydrostannylation to occur with a wide selection of alkynes, thus leading to a proposed hybrid single‐electron transfer/radical propagation mechanism. AIBN=2,2′‐azobis
Regioselective Formation of (
<i>E</i>
)‐β‐Vinylstannanes with a Topologically Controlled Molybdenum‐Based Alkyne Hydrostannation Catalyst
作者:Kyle A. Mandla、Curtis E. Moore、Arnold L. Rheingold、Joshua S. Figueroa
DOI:10.1002/anie.201802397
日期:2018.6.4
long‐standing challenge in transition‐metal‐catalyzed alkynehydrostannation. Herein, we report a well‐defined molybdenum‐based system featuring two encumbering m‐terphenyl isocyanides that reliably and efficiently delivers (E)‐β‐vinylstannanes from a range of terminal and internal alkynes with high regioselectivity. The system is particularly effective for aryl alkynes and can discriminate between alkyl chains
Novel Catalyst System for Hydrostannation of Alkynes
作者:Sreya Gupta、Youngshil Do、Jin Hee Lee、Miryeong Lee、Junghoon Han、Young Ho Rhee、Jaiwook Park
DOI:10.1002/chem.201303057
日期:2014.1.27
A catalystsystem was developed for the highly regio‐ and stereoselective hydrostannation of a range of alkynes with tributylstannane under mild conditions. The active catalytic species was generated from a stable diruthenium complex by illuminating household fluorescent light (30 W) at room temperature.