Metathesis Route to Bridged Metallocenes [J. Am.Chem. Soc.2002,124(31), 9068−9069].

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Axial chiral metallocenes by two-fold ring-closing metathesis.

Novel doubly bridged metallocenes have been prepared by remarkably selective two-fold alkene ring-closing metathesis. The solid state structures of 3 and 5 reveal 1,2',3,4'-connectivity and screw-shaped geometry of the molecules.

متن کامل

An expedient route to substituted furans via olefin cross-metathesis.

The olefin cross-metathesis (CM) reaction is used extensively in organic chemistry and represents a powerful method for the selective synthesis of differentially substituted alkene products. Surprisingly, efforts to integrate this remarkable process into strategies for aromatic and heteroaromatic construction have not been reported. Such structures represent key elements of the majority of smal...

متن کامل

Ring-opening polymerization of strained metallocenophanes: a new route to high molecular weight poly(metallocenes)*

Ring-opening polymerization (ROP) of strained ring-tilted metallocenophanes can be achieved thermally, via anionic initiation, or by the use of transition metal catalysts and provides access to a wide range of high molecular weight (Mw ˆ 10 ±10, Mn> 10 ) poly(metallocenes). These materials possess a variety of interesting properties and many are very easy to prepare. This article provides an ov...

متن کامل

The tandem ring opening/ring closing metathesis route to oxaspirocycles: an approach to phelligridin G.

Phelligridin G is an unusual natural product that contains an embedded spiro-fused furanone core. We have investigated two furan-based synthetic approaches towards the spirocyclic core structure of this natural product from readily available 2-phenylfurans. Although initial studies involving an oxidative cyclization were unsuccessful, we were ultimately able to access this key system through ...

متن کامل

A versatile salt-metathesis route to heteroatomic clusters derived from phosphorus and arsenic Zintl anions.

Salt metathesis reactions between ethylenediamine (en) solutions of the K(3)E(7) (E = P, As) Zintl phases and post-transition metal halides (InCl(3), TlCl, SnI(2) and PbI(2)) have yielded a family of novel heteroatomic cluster anions, [In(E(7))(2)](3-), [TlE(7)](2-) and [E'E(15)](3-) (E' = Sn, Pb; E = P, As). Several of these new species have been characterized by single-crystal X-ray diffracti...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of the American Chemical Society

سال: 2002

ISSN: 0002-7863,1520-5126

DOI: 10.1021/ja028166i