95111-00-5Relevant articles and documents
Photocatalytic Isomerization of Styrenyl Halides: Stereodivergent Synthesis of Functionalized Alkenes
Zhang, Hao,Xu, Qing,Yu, Lei,Yu, Shouyun
supporting information, p. 1472 - 1477 (2019/11/03)
An efficient and general method for the isomerization of styrenyl halides under different photocatalytic conditions (fac-Ir(ppy)3 in methanol for E to Z isomerization and fluorescein in 1,4-dioxane for Z to E isomerization, respectively) is disclosed. A series of stereospecific transformations constitute preliminary validation of this strategy in the synthesis of functionalized alkenes, including two diaryl alkenes, a styrenyl boronic ester and an enyne. The photocatalytic isomerization and subsequent cross coupling reaction can be run in a one-pot manner. The stereodivergent synthesis of all four isomers of a conjugated diene, as well as the antitumor agent DMU-212 and its (Z)-isomer highlights the synthetic applicability of this method.
Horner-Wadsworth-Emmons modification for Ramirez gem-dibromoolefination of aldehydes and ketones using P(Oi-Pr)3
Fang, Yuan-Qing,Lifchits, Olga,Lautens, Mark
, p. 413 - 417 (2008/04/01)
A simple procedure for the use of triisopropylphosphite in the Ramirez olefination is described. This reagent is equally or more reactive than PPh 3 toward aldehydes and ketones in the gem-dibromoolefination of aldehydes and ketones. Under the
A NEW AND CONVENIENT SYNTHESIS OF ARYL-SUBSTITUTED BUTATRIENES USING NICKEL-CATALYZED COUPLING OF ARYL-SUBSTITUTED 1,1-DIBROMOETHENES
Iyoda, Masahiko,Sakaitani, Masahiro,Miyazaki, Tatsuya,Oda, Masaji
, p. 2005 - 2006 (2007/10/02)
The reactions of aryl-substituted 1,1-dibromoethenes with in situ generated tetrakis(triphenylphosphine)nickel(0) in the presence of tetraethylammonium iodide give aryl-substituted butatrienes.