Detection of the Tungsten–Carbene–Olefin Intermediates in Catalytic Metathesis Systems Containing High‐Valent Metal Centers | Zendy

Kress Jacky | Zendy; Osborn John A. | Zendy

Premium

Detection of the Tungsten–Carbene–Olefin Intermediates in Catalytic Metathesis Systems Containing High‐Valent Metal Centers

Author(s) -

Kress Jacky,

Osborn John A.

Publication year - 1992

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.199215851

Subject(s) - carbene , olefin metathesis , catalysis , chemistry , cycloheptene , olefin fiber , photochemistry , olefin polymerization , tungsten , metal , ring (chemistry) , polymer chemistry , polymerization , metathesis , ring opening polymerization , medicinal chemistry , organic chemistry , polymer

The catalytic ring‐opening polymerization of cycloheptene 2 proceeds through the rearrangement of 3 to give the corresponding metallacyclobutane. Compound 3 , which is prepared in situ by addition of 2 to the carbone complex 1 and can be characterized by low‐temperature 1 H and 13 C NMR spectroscopy, is therefore considered a key intermediate for these reactions that are also commercially important. Complexes of this type have up to now been postulated but not detected for catalytic olefin metatheses. R = CH 2 CMe 3 .

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research