Compounds And Compositions Containing Silicon And/Or Other Heteroatoms And/Or Metals And Methods of Making And Using Them
申请人:Welker Mark E.
公开号:US20100056801A1
公开(公告)日:2010-03-04
The present invention relates to compounds, intermediates, compositions, and methods of making compounds and intermediates related to the compounds of Formula (I) and/or Formula (II) and/or Formula (III) and/or Formula (IV) and/or Formula (VI) and/or Formula (VII) as disclosed herein wherein the various substituents are as defined in the written description.
Pd(<scp>ii</scp>)-catalyzed β- and γ-C-(sp<sup>3</sup>)–H dienylation with allenyl acetates
作者:Rahul K. Shukla、Akshay M. Nair、Chandra M. R. Volla
DOI:10.1039/d2sc05188e
日期:——
metal catalyzed C–H activation as a powerful synthetic tool in organic chemistry. Allenes have fascinated synthetic chemists due to their unique reactivity. While directinggroup assisted functionalization of C(sp2)–H bonds with allenes is well documented in the literature, their coupling with more challenging aliphatic C(sp3)–H bonds remains elusive. In this regard, we hereby report a Pd(II) catalyzed
Palladium(II)-Catalyzed S<sub>N</sub>2‘ Reactions of α-Allenic Acetates. Stereoconvergent Synthesis of (<i>Z</i>,<i>E</i>)-2-Bromo-1,3-dienes
作者:Attila Horváth、Jan-E. Bäckvall
DOI:10.1021/jo015950x
日期:2001.11.1
The reaction of acetylated a-allenic alcohols with LiBr in the presence of 1.5 mol % of Pd(OAc)(2) provides easy access to substituted (Z,E)-2-bromo-1,3-dienes in good yields with excellent diastereoselectivity. Both secondary and tertiary acetates as well as terminal and nonterminal allenes were studied to investigate the scope and the limitations of the reaction. A mechanism is proposed to clarify how a diastereomeric mixture of the starting compound is transformed into a single diastereomer of the product.
Iridium complex-catalyzed method for the construction of a quaternary carbon center α to allene
作者:Satoko Kezuka、Kazuyuki Kanemoto、Ryo Takeuchi
DOI:10.1016/j.tetlet.2004.07.002
日期:2004.8
Ir(cod)Cl](2)/dppe-catalyzed allylic alkylation of 1,1-disubstituted-2,3-butadienyl acetates gives a product bearing a quaternary carbon center alpha to allene in high yield, (C) 2004 Elsevier Ltd. All rights reserved.