3 years ago

Synthesis of P-CPh3 Substituted Spirooxaphosphirane Complexes: Steric Effects Dominate the Product Formation

Synthesis of P-CPh3 Substituted Spirooxaphosphirane Complexes: Steric Effects Dominate the Product Formation
Andreas W. Kyri, Rainer Streubel, Philip Junker, Gregor Schnakenburg
The reaction of Li/Cl phosphinidenoid pentacarbonyltungsten complex 2 with cyclobutanone and 3-oxetanone led to new, stable spirooxaphosphirane complexes 3 and 4. In contrast, formation of O–H insertion products 5 and 6 was the preferred reaction pathway in case of cyclopentanone and cyclohexanone; this is in contrast to spirooxaphosphirane complex formation with sterically less demanding P-substituents. All complexes have been characterized by heteronuclear NMR spectroscopy and single crystal X-ray analysis in case of 3 and 4.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00404

DOI: 10.1021/acs.organomet.7b00404

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